Method and arrangement for determining the torque of an internal combustion engine having direct gasoline injection

US6205973A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Hartmut Bauer · Neheim, DE
• Dieter Volz · Heilbronn, DE
• Jurgen Gerhardt · Ditzingen, DE
• Jurgen Pantring · Schwieberdingen, DE
• Michael Oder · Mühlacker, DE
• Werner Hess · Stuttgart, DE
• Christian Kohler · Dresden, DE

Key dates

• Filing date: Oct 1, 1999
• Grant date: Mar 27, 2001
• Expiry date: Oct 1, 2019

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2200/1004
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention is directed to a method for determining the actual torque of an internal combustion engine having gasoline direct injection. In the method, the torque of the engine is computed with a model in dependence upon operating variables. A value for the maximum torque, which would be achieved under standard conditions, is specified from a pregiven characteristic field in dependence upon operating variables which characterize an operating point of the engine. An efficiency is inputted for at least one torque-influencing actuating variable of the engine with the efficiency being formed in dependence upon a current or present value of the actuating variable and a standard value of the actuating variable. The maximum torque is corrected with the efficiency to determine the actual torque. The invention is also directed to an arrangement for determining the actual torque of the engine.