The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 19, 2012
Filed:
May. 22, 2008
Xiaohua Tang, Shenzhen, CN;
Nan Liu, Shenzhen, CN;
Jian Gong, Shanghai, CN;
Ming Yu, Shanghai, CN;
Yingwu Xu, Shanghai, CN;
Kai Liu, Shenzhen, CN;
Xianhong Jiang, Shenzhen, CN;
Qiaoqiao Wu, Shenzhen, CN;
Xiaohua Tang, Shenzhen, CN;
Nan Liu, Shenzhen, CN;
Jian Gong, Shanghai, CN;
Ming Yu, Shanghai, CN;
Yingwu Xu, Shanghai, CN;
Kai Liu, Shenzhen, CN;
Xianhong Jiang, Shenzhen, CN;
Qiaoqiao Wu, Shenzhen, CN;
BYD Co. Ltd., Shenzhen, CN;
Abstract
The present invention provides a clutch engaging control method in a hybrid power output device, wherein the device comprises an engine, a first motor, a clutch and a second motor that are connected in sequence, a battery, and a speed reducing mechanism and a drive shaft that are connected to the output end of the second motor; the method comprises: (a) detecting the rotation speed ωof the second motor and setting the rotation speed ωas the target rotation speed ωof the first motor, when the vehicle is driven by the second motor and the engine is required to be started to provide assistance to the second motor; (b) starting the first motor to drive the engine, and controlling the actual rotation speed ωof the first motor to be close to the target rotation speed ω; (c) switching the state of the first motor from a driving motor to a power generator when the actual rotation speed ωof the first motor is approximately equal to the target rotation speed ω; and (d) engaging the clutch. The method can improve the dynamic response time of the engine and suppress impact in the clutch engaging process. The present invention further provides a clutch engaging control system in a hybrid power output device.