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:
Aug. 05, 2014
Filed:
Mar. 01, 2012
Laszlo Hideg, Sterling Heights, MI (US);
Zhenxing Fu, San Diego, CA (US);
Xiaodong Liu, Windsor, CA;
Dumitru Puiu, Sterling Heights, MI (US);
Laszlo Hideg, Sterling Heights, MI (US);
Zhenxing Fu, San Diego, CA (US);
Xiaodong Liu, Windsor, CA;
Dumitru Puiu, Sterling Heights, MI (US);
Chrysler Group LLC, Auburn Hills, MI (US);
Abstract
A method for assisting a transmission oil pump in a hybrid electric powertrain to generate transmission oil pressure rapidly during vehicle start. An electric motor is initially utilized to provide momentary torque to rotate an oil pump and rapidly generate transmission oil pressure. After initial assistance is provided by the electric motor, an oil pump electric motor powers the oil pump and maintains oil pressure within the hybrid powertrain.