Process and device for reducing load change stresses in a motor vehicle

US5954026A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Peter Stoss · Illertissen, DE
• Hong Zhang · Schwieberdingen, DE

Key dates

• Filing date: Apr 6, 1998
• Grant date: Sep 21, 1999
• Expiry date: Apr 6, 2018

Classification

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

Abstract

In order to damp shocks due to load alterations to as great an extent as possible, indexed base torque of the engine is determined which corresponds to a coupling torque able to be tapped off at the engine crankshaft and not reduced by engine loss torques. The indexed base torque is then converted by filtering into an indexed setpoint torque which exhibits a smaller rise compared to the indexed base torque in response to a load alteration. Finally, a setpoint ignition angle is derived from the an indexed setpoint torque.