2003 Fiscal Year Final Research Report Summary
Driving maneuverability and environmental features of a rural electric vehicle in view of its practicability
| Project/Area Number |
13556039
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
農業機械学
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| Research Institution | University of Tsukuba |
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Principal Investigator |
KOIKE Masayuki University of Tsukuba, Institute of Agriculture and Forest Engineering, Professor, 農林工学系, 教授 (60032306)
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| Co-Investigator(Kenkyū-buntansha) |
HASEGAWA Hideo University of Tsukuba, Institute of Agriculture and Forest Engineering, Research Associate, 農林工学系, 助手 (80292514)
YODA Akira University of Tsukuba, Institute of Agriculture and Forest Engineering, Research Associate, 農林工学系, 助手 (70133064)
TAKIGAWA Tomohiro University of Tsukuba, Institute of Agriculture and Forest Engineering, Associate Professor, 農林工学系, 助教授 (00236382)
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| Project Period (FY) |
2001 – 2003
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| Keywords | electric vehicle / environmental load / farm tractor / rotary operation / plowing operation / monocoque structure / repetitive load / excessive stress |
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| Research Abstract |
To clarify the driving performance and environmental features of the electrically-powered vehicle, a rural electric vehicle CREV) has been fabricated and tested, Selected findings can be described as follows
1.A REV has been modified enabling the rotary driving operation by the power derived from PTO driving shaft. Major specifications include overall voltage of 120V, allowable recharging number of 1400 and output density of 480W1kg, respectively
2.In the case of rotary tillage, in comparison with the diesel engine, the exhaust gas contained 0.0017g/km only while the diesel indicated 0.70g/km in terms of NOx. Another advantage was recognized for emission of CO_2 indicating 140g/km against 430g/km of diesel engine. As a whole, considerable amount or reduction for environmental loads was possibly found to this specific vehicle as an attainable research goal
3.The effective, available energy from single wait of REV exhibited approximately 33310Wh against 14000Wh or so of diesel engine. This fact again suggested further comparative advantage in utilizing it for the employment to actual farming operation
4.In the process of field testing, the covering acreage per full-charge got approximately 0.25ha and the field capacity of 0.6ha/h. It can be noted such a field performance was prone to be affected by soil conditions
5.During plowing operation, the setting conditions of implement were arranged like falling width of 990mm, tilling depth of 160mm, required power of 22.3kW and travel speed of 3.8m/s, respectively, greater emphasis should be placed to understand the covering acreage per full-charge was 0.20ha and the field capacity of 0.45ha/h
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