Generator power-based cold start strategy

US8020652B2 · kind B2 · utility

Assignee

• Ford Global Technologies, LLC · US

Inventors

• Paul Stephen Bryan · Belleville, US
• Christopher Adam Ochocinski · Canton, US
• Kenneth Frederick · Dearborn, US
• Shunsuke Okubo · Belleville, US

Key dates

• Filing date: Dec 4, 2007
• Grant date: Sep 20, 2011
• Expiry date: Feb 18, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S903/906
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The method of the invention controls engine speed during engine starting for a hybrid electric vehicle that includes a battery, an engine and a generator, acting as a motor, whereby generator torque assists the engine to develop a stable running speed throughout an engine start event, particularly a cold engine start event, without violating battery power limits.