Speed control in a torque-based system

US7698049B2 · kind B2 · utility

Assignee

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

• Christopher E. Whitney · Commerce, US
• Ning Jin · Novi, US
• Todd R. Shupe · Milford, US
• Weixin Yan · Novi, US
• Michael Livshiz · Ann Arbor, US
• Klaus Pochner · Gerolzhofen, DE

Key dates

• Filing date: Dec 3, 2008
• Grant date: Apr 13, 2010
• Expiry date: Dec 14, 2028

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2250/22
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An engine control system includes a power module, an air flow module, a torque estimation module, and an air control module. The power module determines a power-based torque based on a desired engine speed. The air flow module determines an air flow value based on the power-based torque. The torque estimation module estimates a desired torque based on the air flow value. The air control module selectively determines a throttle area based on the desired torque. A throttle valve is actuated based on the throttle area.