Control system and method for improving engine stop-start response time

US8347855B2 · kind B2 · utility

Assignee

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

• Norman Schoenek · Novi, US
• Michael G. Reynolds · Troy, US
• Amin Abboud · Livonia, US
• Gary E. McGee · Oxford, US
• Douglas R. Verner · Sterling Heights, US
• Sharon Liu · Ann Arbor, US

Key dates

• Filing date: May 13, 2010
• Grant date: Jan 8, 2013
• Expiry date: Jul 21, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A control system for an engine includes a stop-start initiation module and a load control module. The stop-start initiation module shuts down the engine in response to an engine shutdown request. The load control module, in response to the engine shutdown request, increases a rate at which a rotational speed of the engine decreases during engine shutdown by increasing a rotational load input to the engine by an engine accessory coupled to a crankshaft of the engine. A method for an engine includes shutting down the engine in response to an engine shutdown request. The method further includes increasing, in response to the engine shutdown request, a rate at which a rotational speed of the engine decreases during engine shutdown by increasing a rotational load input to the engine by an engine accessory coupled to a crankshaft of the engine.