Patent ID: 9695768
Date: 2017-07-04
CPC Classifications: F02D

Claim:
1. A method of engine control for fuel consumption reduction or power increase of an internal combustion engine of a motor vehicle, the method comprising: detecting a crank angle of a crankshaft at which a exhaust gas flow from at least one cylinder can be representatively measured on a lambda probe; measuring the exhaust gas flow on the lambda probe; scanning a signal of the lambda probe at the time of the detection of the crank angle to generate a scanned value; sending the scanned value to a computer; correcting the scanned value using an model having a global lambda value stored in the computer and representing at least one of an exhaust gas pressure or exhaust gas back pressure; calculating at least one of an effective combustion lambda of the at least one cylinder and a scavenging air component in the exhaust gas flow after the at least one cylinder a as a function of the scanned value and the global lambda value stored in the computer; and controlling an operating parameter of the internal combustion engine in response to the effective combustion lambda.