发明名称 |
Hybrid electric vehicle auxiliary oil pump |
摘要 |
An automatic transmission for a hybrid electric vehicle where an engine is shut down during vehicle stops to improve fuel economy. The automatic transmission includes a main pump that is driven off of a transmission input shaft, and an electronically driven auxiliary pump. A shut down shuttle valve switches a hydraulic circuit connection from the main pump to the auxiliary pump for a low-reverse clutch and a forward clutch when the vehicle stops in drive or low gear. A pressure transducer, controller and steady state relay allow for closed loop feedback to control the auxiliary pump in order to assure sufficient hydraulic pressure while minimizing power consumption.
|
申请公布号 |
US6805647(B2) |
申请公布日期 |
2004.10.19 |
申请号 |
US20020065242 |
申请日期 |
2002.09.27 |
申请人 |
FORD MOTOR COMPANY |
发明人 |
SILVERI ANDREW JOHN;KRASKA MARVIN PAUL;ORTMANN WALTER JOSEPH |
分类号 |
B60K6/48;B60K6/547;B60W10/10;F16H61/00;F16H61/02;(IPC1-7):F16H3/72 |
主分类号 |
B60K6/48 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|