Apparatus and method for improving the jolt control in a motor vehicle drive system

US4266447A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Gerhard Heess · Tamm, DE
• Manfred Schwab · Gerlingen, DE
• Walter Stroh · Cleebronn, DE

Key dates

• Filing date: Oct 30, 1979
• Grant date: May 12, 1981
• Expiry date: Oct 30, 1999

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H63/502
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The initiation and end of the application of a jolt control system to the internal combustion engine during gearshift operations is matched to then-present operating conditions by determining the engine speeds at which the control is to be initiated and ended as a function of the engine speed at the start of the gearshifting. For this purpose, the initial speed is digitalized and used as an address for a storage which contains the desired values. In a second embodiment, the speed at the end of the gearshift is determined and the values read out from storage are speed increment values which are added to the speed at the start of the gearshifting and subtracted from the speed at the end of the gearshift during downshift operations, and vice versa during upshift operations, to determine the engine speeds at which the jolt control is to be initiated and terminated.