Volvo Personvagnar Ab

Volvo Personvagner Ab

Peter Novak

S&ouml;ren Eriksson

Methods are disclosed for controlling an internal combustion engine in a vehicle which include detecting the value of a variable associated with an operating condition of the engine including the rotational speed and the load of the engine, determining a temperature value of a temperature-critical component associated with the engine, and controlling the thermal load of the engine based upon the predetermined temperature value by adding surplus fuel to the engine in a manner which gradually increases the supply of the surplus fuel based upon the value of the predetermined variable derived from the inherent thermal inertia in the temperature-critical component. Apparatus for controlling the engine in the vehicle is also disclosed.

Method and device for controlling a combustion engine

Methods for determining the temperature of at least one component associated with an internal combustion engine in a vehicle are disclosed comprising detecting the value of a predetermined variable associated with an operating condition of the engine, the variable including the rotational speed and load of the engine, and deriving the temperature of the component based upon the value of the predetermined variable derived from the inherent thermal inertia associated with that component. Apparatus for determining the temperature of the component is also disclosed.

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Öckerö, Sweden

Peter Novak