Objective evaluation of gearshift process of agricultural tractors
In the last 20 years, manufacturers have invested in continuously variable transmissions (CVTs) for agricultural tractors, since farmers have demanded more easy-to-use transmissions to increase comfort and driveability. Recently, stepped transmissions have been of interest due to their greater effic...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Mattetti, Michele [verfasserIn] |
|---|
| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022transfer abstract |
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| Schlagwörter: |
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| Umfang: |
12 |
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| Übergeordnetes Werk: |
Enthalten in: The role of policy priorities and targeting in the spatial location of participation in Agri-Environmental Schemes in Emilia-Romagna (Italy) - Raggi, M. ELSEVIER, 2015, San Diego, Calif |
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| Übergeordnetes Werk: |
volume:224 ; year:2022 ; pages:324-335 ; extent:12 |
| Links: |
|---|
| DOI / URN: |
10.1016/j.biosystemseng.2022.11.001 |
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ELV059645296 |
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| 520 | |a In the last 20 years, manufacturers have invested in continuously variable transmissions (CVTs) for agricultural tractors, since farmers have demanded more easy-to-use transmissions to increase comfort and driveability. Recently, stepped transmissions have been of interest due to their greater efficiency compared to continuously variable transmissions. To fully compete with CVTs, stepped transmissions must be fully automated and properly handle the operator's comfort during gearshifts. This paper aims to define a test procedure and data analysis method for evaluating the gearshift quality of transmissions for agricultural tractors. The procedure is composed of two tests and aims to reproduce the typical manoeuvres that occur during farming, such as accelerating and shuttling. This method was applied to 14 tractors with different transmissions and engine peak power. On each tractor, an inertial measuring unit and a CAN-Logger were installed to record vehicle and powertrain operating conditions. From the recorded data, a set of metrics was calculated to objectively quantify the impact of gearshift. These metrics were combined to obtain an overall score, which allows for the ranking of tractors in terms of gearshift quality and its dependence on design parameters. Based on our metrics, CVTs outperform stepped transmissions due to their ability to combine high performance with comfort measures. The approach outlined in this study enables manufacturers to quickly spot the weak points of the gearshift behaviour of a tractor so that they can address specific issues and increase operator satisfaction and the overall quality of their tractors. | ||
| 520 | |a In the last 20 years, manufacturers have invested in continuously variable transmissions (CVTs) for agricultural tractors, since farmers have demanded more easy-to-use transmissions to increase comfort and driveability. Recently, stepped transmissions have been of interest due to their greater efficiency compared to continuously variable transmissions. To fully compete with CVTs, stepped transmissions must be fully automated and properly handle the operator's comfort during gearshifts. This paper aims to define a test procedure and data analysis method for evaluating the gearshift quality of transmissions for agricultural tractors. The procedure is composed of two tests and aims to reproduce the typical manoeuvres that occur during farming, such as accelerating and shuttling. This method was applied to 14 tractors with different transmissions and engine peak power. On each tractor, an inertial measuring unit and a CAN-Logger were installed to record vehicle and powertrain operating conditions. From the recorded data, a set of metrics was calculated to objectively quantify the impact of gearshift. These metrics were combined to obtain an overall score, which allows for the ranking of tractors in terms of gearshift quality and its dependence on design parameters. Based on our metrics, CVTs outperform stepped transmissions due to their ability to combine high performance with comfort measures. The approach outlined in this study enables manufacturers to quickly spot the weak points of the gearshift behaviour of a tractor so that they can address specific issues and increase operator satisfaction and the overall quality of their tractors. | ||
| 650 | 7 | |a transmission |2 Elsevier | |
| 650 | 7 | |a CANBUS |2 Elsevier | |
| 650 | 7 | |a comfort |2 Elsevier | |
| 650 | 7 | |a gearshift quality |2 Elsevier | |
| 650 | 7 | |a driveability |2 Elsevier | |
| 700 | 1 | |a Michielan, Enrico |4 oth | |
| 700 | 1 | |a Mantovani, Giacomo |4 oth | |
| 700 | 1 | |a Varani, Massimiliano |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Academ. Press |a Raggi, M. ELSEVIER |t The role of policy priorities and targeting in the spatial location of participation in Agri-Environmental Schemes in Emilia-Romagna (Italy) |d 2015 |g San Diego, Calif |w (DE-627)ELV018374581 |
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10.1016/j.biosystemseng.2022.11.001 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001982.pica (DE-627)ELV059645296 (ELSEVIER)S1537-5110(22)00254-9 DE-627 ger DE-627 rakwb eng 630 VZ 640 VZ 320 VZ 630 640 610 VZ Mattetti, Michele verfasserin aut Objective evaluation of gearshift process of agricultural tractors 2022transfer abstract 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In the last 20 years, manufacturers have invested in continuously variable transmissions (CVTs) for agricultural tractors, since farmers have demanded more easy-to-use transmissions to increase comfort and driveability. Recently, stepped transmissions have been of interest due to their greater efficiency compared to continuously variable transmissions. To fully compete with CVTs, stepped transmissions must be fully automated and properly handle the operator's comfort during gearshifts. This paper aims to define a test procedure and data analysis method for evaluating the gearshift quality of transmissions for agricultural tractors. The procedure is composed of two tests and aims to reproduce the typical manoeuvres that occur during farming, such as accelerating and shuttling. This method was applied to 14 tractors with different transmissions and engine peak power. On each tractor, an inertial measuring unit and a CAN-Logger were installed to record vehicle and powertrain operating conditions. From the recorded data, a set of metrics was calculated to objectively quantify the impact of gearshift. These metrics were combined to obtain an overall score, which allows for the ranking of tractors in terms of gearshift quality and its dependence on design parameters. Based on our metrics, CVTs outperform stepped transmissions due to their ability to combine high performance with comfort measures. The approach outlined in this study enables manufacturers to quickly spot the weak points of the gearshift behaviour of a tractor so that they can address specific issues and increase operator satisfaction and the overall quality of their tractors. In the last 20 years, manufacturers have invested in continuously variable transmissions (CVTs) for agricultural tractors, since farmers have demanded more easy-to-use transmissions to increase comfort and driveability. Recently, stepped transmissions have been of interest due to their greater efficiency compared to continuously variable transmissions. To fully compete with CVTs, stepped transmissions must be fully automated and properly handle the operator's comfort during gearshifts. This paper aims to define a test procedure and data analysis method for evaluating the gearshift quality of transmissions for agricultural tractors. The procedure is composed of two tests and aims to reproduce the typical manoeuvres that occur during farming, such as accelerating and shuttling. This method was applied to 14 tractors with different transmissions and engine peak power. On each tractor, an inertial measuring unit and a CAN-Logger were installed to record vehicle and powertrain operating conditions. From the recorded data, a set of metrics was calculated to objectively quantify the impact of gearshift. These metrics were combined to obtain an overall score, which allows for the ranking of tractors in terms of gearshift quality and its dependence on design parameters. Based on our metrics, CVTs outperform stepped transmissions due to their ability to combine high performance with comfort measures. The approach outlined in this study enables manufacturers to quickly spot the weak points of the gearshift behaviour of a tractor so that they can address specific issues and increase operator satisfaction and the overall quality of their tractors. transmission Elsevier CANBUS Elsevier comfort Elsevier gearshift quality Elsevier driveability Elsevier Michielan, Enrico oth Mantovani, Giacomo oth Varani, Massimiliano oth Enthalten in Academ. Press Raggi, M. ELSEVIER The role of policy priorities and targeting in the spatial location of participation in Agri-Environmental Schemes in Emilia-Romagna (Italy) 2015 San Diego, Calif (DE-627)ELV018374581 volume:224 year:2022 pages:324-335 extent:12 https://doi.org/10.1016/j.biosystemseng.2022.11.001 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_30 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 AR 224 2022 324-335 12 |
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10.1016/j.biosystemseng.2022.11.001 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001982.pica (DE-627)ELV059645296 (ELSEVIER)S1537-5110(22)00254-9 DE-627 ger DE-627 rakwb eng 630 VZ 640 VZ 320 VZ 630 640 610 VZ Mattetti, Michele verfasserin aut Objective evaluation of gearshift process of agricultural tractors 2022transfer abstract 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In the last 20 years, manufacturers have invested in continuously variable transmissions (CVTs) for agricultural tractors, since farmers have demanded more easy-to-use transmissions to increase comfort and driveability. Recently, stepped transmissions have been of interest due to their greater efficiency compared to continuously variable transmissions. To fully compete with CVTs, stepped transmissions must be fully automated and properly handle the operator's comfort during gearshifts. This paper aims to define a test procedure and data analysis method for evaluating the gearshift quality of transmissions for agricultural tractors. The procedure is composed of two tests and aims to reproduce the typical manoeuvres that occur during farming, such as accelerating and shuttling. This method was applied to 14 tractors with different transmissions and engine peak power. On each tractor, an inertial measuring unit and a CAN-Logger were installed to record vehicle and powertrain operating conditions. From the recorded data, a set of metrics was calculated to objectively quantify the impact of gearshift. These metrics were combined to obtain an overall score, which allows for the ranking of tractors in terms of gearshift quality and its dependence on design parameters. Based on our metrics, CVTs outperform stepped transmissions due to their ability to combine high performance with comfort measures. The approach outlined in this study enables manufacturers to quickly spot the weak points of the gearshift behaviour of a tractor so that they can address specific issues and increase operator satisfaction and the overall quality of their tractors. In the last 20 years, manufacturers have invested in continuously variable transmissions (CVTs) for agricultural tractors, since farmers have demanded more easy-to-use transmissions to increase comfort and driveability. Recently, stepped transmissions have been of interest due to their greater efficiency compared to continuously variable transmissions. To fully compete with CVTs, stepped transmissions must be fully automated and properly handle the operator's comfort during gearshifts. This paper aims to define a test procedure and data analysis method for evaluating the gearshift quality of transmissions for agricultural tractors. The procedure is composed of two tests and aims to reproduce the typical manoeuvres that occur during farming, such as accelerating and shuttling. This method was applied to 14 tractors with different transmissions and engine peak power. On each tractor, an inertial measuring unit and a CAN-Logger were installed to record vehicle and powertrain operating conditions. From the recorded data, a set of metrics was calculated to objectively quantify the impact of gearshift. These metrics were combined to obtain an overall score, which allows for the ranking of tractors in terms of gearshift quality and its dependence on design parameters. Based on our metrics, CVTs outperform stepped transmissions due to their ability to combine high performance with comfort measures. The approach outlined in this study enables manufacturers to quickly spot the weak points of the gearshift behaviour of a tractor so that they can address specific issues and increase operator satisfaction and the overall quality of their tractors. transmission Elsevier CANBUS Elsevier comfort Elsevier gearshift quality Elsevier driveability Elsevier Michielan, Enrico oth Mantovani, Giacomo oth Varani, Massimiliano oth Enthalten in Academ. Press Raggi, M. ELSEVIER The role of policy priorities and targeting in the spatial location of participation in Agri-Environmental Schemes in Emilia-Romagna (Italy) 2015 San Diego, Calif (DE-627)ELV018374581 volume:224 year:2022 pages:324-335 extent:12 https://doi.org/10.1016/j.biosystemseng.2022.11.001 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_30 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 AR 224 2022 324-335 12 |
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10.1016/j.biosystemseng.2022.11.001 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001982.pica (DE-627)ELV059645296 (ELSEVIER)S1537-5110(22)00254-9 DE-627 ger DE-627 rakwb eng 630 VZ 640 VZ 320 VZ 630 640 610 VZ Mattetti, Michele verfasserin aut Objective evaluation of gearshift process of agricultural tractors 2022transfer abstract 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In the last 20 years, manufacturers have invested in continuously variable transmissions (CVTs) for agricultural tractors, since farmers have demanded more easy-to-use transmissions to increase comfort and driveability. Recently, stepped transmissions have been of interest due to their greater efficiency compared to continuously variable transmissions. To fully compete with CVTs, stepped transmissions must be fully automated and properly handle the operator's comfort during gearshifts. This paper aims to define a test procedure and data analysis method for evaluating the gearshift quality of transmissions for agricultural tractors. The procedure is composed of two tests and aims to reproduce the typical manoeuvres that occur during farming, such as accelerating and shuttling. This method was applied to 14 tractors with different transmissions and engine peak power. On each tractor, an inertial measuring unit and a CAN-Logger were installed to record vehicle and powertrain operating conditions. From the recorded data, a set of metrics was calculated to objectively quantify the impact of gearshift. These metrics were combined to obtain an overall score, which allows for the ranking of tractors in terms of gearshift quality and its dependence on design parameters. Based on our metrics, CVTs outperform stepped transmissions due to their ability to combine high performance with comfort measures. The approach outlined in this study enables manufacturers to quickly spot the weak points of the gearshift behaviour of a tractor so that they can address specific issues and increase operator satisfaction and the overall quality of their tractors. In the last 20 years, manufacturers have invested in continuously variable transmissions (CVTs) for agricultural tractors, since farmers have demanded more easy-to-use transmissions to increase comfort and driveability. Recently, stepped transmissions have been of interest due to their greater efficiency compared to continuously variable transmissions. To fully compete with CVTs, stepped transmissions must be fully automated and properly handle the operator's comfort during gearshifts. This paper aims to define a test procedure and data analysis method for evaluating the gearshift quality of transmissions for agricultural tractors. The procedure is composed of two tests and aims to reproduce the typical manoeuvres that occur during farming, such as accelerating and shuttling. This method was applied to 14 tractors with different transmissions and engine peak power. On each tractor, an inertial measuring unit and a CAN-Logger were installed to record vehicle and powertrain operating conditions. From the recorded data, a set of metrics was calculated to objectively quantify the impact of gearshift. These metrics were combined to obtain an overall score, which allows for the ranking of tractors in terms of gearshift quality and its dependence on design parameters. Based on our metrics, CVTs outperform stepped transmissions due to their ability to combine high performance with comfort measures. The approach outlined in this study enables manufacturers to quickly spot the weak points of the gearshift behaviour of a tractor so that they can address specific issues and increase operator satisfaction and the overall quality of their tractors. transmission Elsevier CANBUS Elsevier comfort Elsevier gearshift quality Elsevier driveability Elsevier Michielan, Enrico oth Mantovani, Giacomo oth Varani, Massimiliano oth Enthalten in Academ. Press Raggi, M. ELSEVIER The role of policy priorities and targeting in the spatial location of participation in Agri-Environmental Schemes in Emilia-Romagna (Italy) 2015 San Diego, Calif (DE-627)ELV018374581 volume:224 year:2022 pages:324-335 extent:12 https://doi.org/10.1016/j.biosystemseng.2022.11.001 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_30 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 AR 224 2022 324-335 12 |
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10.1016/j.biosystemseng.2022.11.001 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001982.pica (DE-627)ELV059645296 (ELSEVIER)S1537-5110(22)00254-9 DE-627 ger DE-627 rakwb eng 630 VZ 640 VZ 320 VZ 630 640 610 VZ Mattetti, Michele verfasserin aut Objective evaluation of gearshift process of agricultural tractors 2022transfer abstract 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In the last 20 years, manufacturers have invested in continuously variable transmissions (CVTs) for agricultural tractors, since farmers have demanded more easy-to-use transmissions to increase comfort and driveability. Recently, stepped transmissions have been of interest due to their greater efficiency compared to continuously variable transmissions. To fully compete with CVTs, stepped transmissions must be fully automated and properly handle the operator's comfort during gearshifts. This paper aims to define a test procedure and data analysis method for evaluating the gearshift quality of transmissions for agricultural tractors. The procedure is composed of two tests and aims to reproduce the typical manoeuvres that occur during farming, such as accelerating and shuttling. This method was applied to 14 tractors with different transmissions and engine peak power. On each tractor, an inertial measuring unit and a CAN-Logger were installed to record vehicle and powertrain operating conditions. From the recorded data, a set of metrics was calculated to objectively quantify the impact of gearshift. These metrics were combined to obtain an overall score, which allows for the ranking of tractors in terms of gearshift quality and its dependence on design parameters. Based on our metrics, CVTs outperform stepped transmissions due to their ability to combine high performance with comfort measures. The approach outlined in this study enables manufacturers to quickly spot the weak points of the gearshift behaviour of a tractor so that they can address specific issues and increase operator satisfaction and the overall quality of their tractors. In the last 20 years, manufacturers have invested in continuously variable transmissions (CVTs) for agricultural tractors, since farmers have demanded more easy-to-use transmissions to increase comfort and driveability. Recently, stepped transmissions have been of interest due to their greater efficiency compared to continuously variable transmissions. To fully compete with CVTs, stepped transmissions must be fully automated and properly handle the operator's comfort during gearshifts. This paper aims to define a test procedure and data analysis method for evaluating the gearshift quality of transmissions for agricultural tractors. The procedure is composed of two tests and aims to reproduce the typical manoeuvres that occur during farming, such as accelerating and shuttling. This method was applied to 14 tractors with different transmissions and engine peak power. On each tractor, an inertial measuring unit and a CAN-Logger were installed to record vehicle and powertrain operating conditions. From the recorded data, a set of metrics was calculated to objectively quantify the impact of gearshift. These metrics were combined to obtain an overall score, which allows for the ranking of tractors in terms of gearshift quality and its dependence on design parameters. Based on our metrics, CVTs outperform stepped transmissions due to their ability to combine high performance with comfort measures. The approach outlined in this study enables manufacturers to quickly spot the weak points of the gearshift behaviour of a tractor so that they can address specific issues and increase operator satisfaction and the overall quality of their tractors. transmission Elsevier CANBUS Elsevier comfort Elsevier gearshift quality Elsevier driveability Elsevier Michielan, Enrico oth Mantovani, Giacomo oth Varani, Massimiliano oth Enthalten in Academ. Press Raggi, M. ELSEVIER The role of policy priorities and targeting in the spatial location of participation in Agri-Environmental Schemes in Emilia-Romagna (Italy) 2015 San Diego, Calif (DE-627)ELV018374581 volume:224 year:2022 pages:324-335 extent:12 https://doi.org/10.1016/j.biosystemseng.2022.11.001 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_30 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 AR 224 2022 324-335 12 |
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10.1016/j.biosystemseng.2022.11.001 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001982.pica (DE-627)ELV059645296 (ELSEVIER)S1537-5110(22)00254-9 DE-627 ger DE-627 rakwb eng 630 VZ 640 VZ 320 VZ 630 640 610 VZ Mattetti, Michele verfasserin aut Objective evaluation of gearshift process of agricultural tractors 2022transfer abstract 12 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In the last 20 years, manufacturers have invested in continuously variable transmissions (CVTs) for agricultural tractors, since farmers have demanded more easy-to-use transmissions to increase comfort and driveability. Recently, stepped transmissions have been of interest due to their greater efficiency compared to continuously variable transmissions. To fully compete with CVTs, stepped transmissions must be fully automated and properly handle the operator's comfort during gearshifts. This paper aims to define a test procedure and data analysis method for evaluating the gearshift quality of transmissions for agricultural tractors. The procedure is composed of two tests and aims to reproduce the typical manoeuvres that occur during farming, such as accelerating and shuttling. This method was applied to 14 tractors with different transmissions and engine peak power. On each tractor, an inertial measuring unit and a CAN-Logger were installed to record vehicle and powertrain operating conditions. From the recorded data, a set of metrics was calculated to objectively quantify the impact of gearshift. These metrics were combined to obtain an overall score, which allows for the ranking of tractors in terms of gearshift quality and its dependence on design parameters. Based on our metrics, CVTs outperform stepped transmissions due to their ability to combine high performance with comfort measures. The approach outlined in this study enables manufacturers to quickly spot the weak points of the gearshift behaviour of a tractor so that they can address specific issues and increase operator satisfaction and the overall quality of their tractors. In the last 20 years, manufacturers have invested in continuously variable transmissions (CVTs) for agricultural tractors, since farmers have demanded more easy-to-use transmissions to increase comfort and driveability. Recently, stepped transmissions have been of interest due to their greater efficiency compared to continuously variable transmissions. To fully compete with CVTs, stepped transmissions must be fully automated and properly handle the operator's comfort during gearshifts. This paper aims to define a test procedure and data analysis method for evaluating the gearshift quality of transmissions for agricultural tractors. The procedure is composed of two tests and aims to reproduce the typical manoeuvres that occur during farming, such as accelerating and shuttling. This method was applied to 14 tractors with different transmissions and engine peak power. On each tractor, an inertial measuring unit and a CAN-Logger were installed to record vehicle and powertrain operating conditions. From the recorded data, a set of metrics was calculated to objectively quantify the impact of gearshift. These metrics were combined to obtain an overall score, which allows for the ranking of tractors in terms of gearshift quality and its dependence on design parameters. Based on our metrics, CVTs outperform stepped transmissions due to their ability to combine high performance with comfort measures. The approach outlined in this study enables manufacturers to quickly spot the weak points of the gearshift behaviour of a tractor so that they can address specific issues and increase operator satisfaction and the overall quality of their tractors. transmission Elsevier CANBUS Elsevier comfort Elsevier gearshift quality Elsevier driveability Elsevier Michielan, Enrico oth Mantovani, Giacomo oth Varani, Massimiliano oth Enthalten in Academ. Press Raggi, M. ELSEVIER The role of policy priorities and targeting in the spatial location of participation in Agri-Environmental Schemes in Emilia-Romagna (Italy) 2015 San Diego, Calif (DE-627)ELV018374581 volume:224 year:2022 pages:324-335 extent:12 https://doi.org/10.1016/j.biosystemseng.2022.11.001 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_30 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 AR 224 2022 324-335 12 |
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objective evaluation of gearshift process of agricultural tractors |
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Objective evaluation of gearshift process of agricultural tractors |
| abstract |
In the last 20 years, manufacturers have invested in continuously variable transmissions (CVTs) for agricultural tractors, since farmers have demanded more easy-to-use transmissions to increase comfort and driveability. Recently, stepped transmissions have been of interest due to their greater efficiency compared to continuously variable transmissions. To fully compete with CVTs, stepped transmissions must be fully automated and properly handle the operator's comfort during gearshifts. This paper aims to define a test procedure and data analysis method for evaluating the gearshift quality of transmissions for agricultural tractors. The procedure is composed of two tests and aims to reproduce the typical manoeuvres that occur during farming, such as accelerating and shuttling. This method was applied to 14 tractors with different transmissions and engine peak power. On each tractor, an inertial measuring unit and a CAN-Logger were installed to record vehicle and powertrain operating conditions. From the recorded data, a set of metrics was calculated to objectively quantify the impact of gearshift. These metrics were combined to obtain an overall score, which allows for the ranking of tractors in terms of gearshift quality and its dependence on design parameters. Based on our metrics, CVTs outperform stepped transmissions due to their ability to combine high performance with comfort measures. The approach outlined in this study enables manufacturers to quickly spot the weak points of the gearshift behaviour of a tractor so that they can address specific issues and increase operator satisfaction and the overall quality of their tractors. |
| abstractGer |
In the last 20 years, manufacturers have invested in continuously variable transmissions (CVTs) for agricultural tractors, since farmers have demanded more easy-to-use transmissions to increase comfort and driveability. Recently, stepped transmissions have been of interest due to their greater efficiency compared to continuously variable transmissions. To fully compete with CVTs, stepped transmissions must be fully automated and properly handle the operator's comfort during gearshifts. This paper aims to define a test procedure and data analysis method for evaluating the gearshift quality of transmissions for agricultural tractors. The procedure is composed of two tests and aims to reproduce the typical manoeuvres that occur during farming, such as accelerating and shuttling. This method was applied to 14 tractors with different transmissions and engine peak power. On each tractor, an inertial measuring unit and a CAN-Logger were installed to record vehicle and powertrain operating conditions. From the recorded data, a set of metrics was calculated to objectively quantify the impact of gearshift. These metrics were combined to obtain an overall score, which allows for the ranking of tractors in terms of gearshift quality and its dependence on design parameters. Based on our metrics, CVTs outperform stepped transmissions due to their ability to combine high performance with comfort measures. The approach outlined in this study enables manufacturers to quickly spot the weak points of the gearshift behaviour of a tractor so that they can address specific issues and increase operator satisfaction and the overall quality of their tractors. |
| abstract_unstemmed |
In the last 20 years, manufacturers have invested in continuously variable transmissions (CVTs) for agricultural tractors, since farmers have demanded more easy-to-use transmissions to increase comfort and driveability. Recently, stepped transmissions have been of interest due to their greater efficiency compared to continuously variable transmissions. To fully compete with CVTs, stepped transmissions must be fully automated and properly handle the operator's comfort during gearshifts. This paper aims to define a test procedure and data analysis method for evaluating the gearshift quality of transmissions for agricultural tractors. The procedure is composed of two tests and aims to reproduce the typical manoeuvres that occur during farming, such as accelerating and shuttling. This method was applied to 14 tractors with different transmissions and engine peak power. On each tractor, an inertial measuring unit and a CAN-Logger were installed to record vehicle and powertrain operating conditions. From the recorded data, a set of metrics was calculated to objectively quantify the impact of gearshift. These metrics were combined to obtain an overall score, which allows for the ranking of tractors in terms of gearshift quality and its dependence on design parameters. Based on our metrics, CVTs outperform stepped transmissions due to their ability to combine high performance with comfort measures. The approach outlined in this study enables manufacturers to quickly spot the weak points of the gearshift behaviour of a tractor so that they can address specific issues and increase operator satisfaction and the overall quality of their tractors. |
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Objective evaluation of gearshift process of agricultural tractors |
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