发明名称 |
LINE PRESSURE CONTROL AT CRANKING AND SUBSEQUENT WARMING-UP OPERATION OF ENGINE |
摘要 |
A hydraulic pressure, i.e., a line pressure, of a hydraulic fluid supplied from an engine driven pump toward a hydraulically actuable coupling of an automatic transmission is held at the maximum pressure value when a temperature of an automatic transmission oil is less than a predetermined temperature value. However, the hydraulic pressure is temporarily decreased from the maximum pressure value to the minimum pressure value for a period of time after cranking of the engine when the transmission oil temperature is lower than the predetermined temperature value. Owing to a decreased load on the engine by the oil pump, smooth cranking and subsequent warming-up operation of the engine is assured under cold whether condition when the automatic transmission oil temperature is lower than the predetermined temperature value.
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申请公布号 |
US5115694(A) |
申请公布日期 |
1992.05.26 |
申请号 |
US19910727246 |
申请日期 |
1991.07.11 |
申请人 |
NISSAN MOTOR CO., LTD. |
发明人 |
SASAKI, HIROSHI;NAKAZAWA, SHINSUKE;KATO, YUJI;WAKAHARA, TATSUO;SHIMANAKA, SHIGEKI;ASANO, HIROSHI;YAMAGUCHI, HIROSHI;ISHIGAMI, KAZUHIRO;TAKENOUCHI, SHINICHI |
分类号 |
F16D48/02;F16H59/72;F16H59/78;F16H61/00;F16H61/04 |
主分类号 |
F16D48/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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