Internal combustion engine with preheating of the intake air, and method of operating the engine
OwnerOskar Schatzinventor
Life of this patent
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Abstract
The compression ratio of an IC engine is reduced to the lowest value desired in the warmed-up operating state. Taking into account a given optimum combustion gas temperature function the combustion air is acted upon prior to its entry into the combustion chamber of the engine in accordance with the respective operations situation as regards temperature and/or quantity flow.
Claims10
A method for operation of an internal combustion engine, said engine including a circulating coolant system divided into a radiator circuit, having coolant flowing between a radiator and the engine, and a heating circuit, having coolant flowing between a vehicle compartment heating means and the engine, the method comprising:
- passing hot coolant through said heating circuit;
- passing said coolant through a heat exchanger means operatively coupled with said heating circuit;
- drawing combustion air into said engine;
- selectively passing said combustion air through said heat exchanger means to provide said combustion air at a given optimum temperature prior to entry into a combustion chamber of the engine in accordance with the respective operational situation.
An internal combustion engine with a compression ratio which is reduced to its lowest desired value at warm up operational conditions comprising:
- said engine including a circulating coolant system divided into a radiator circuit, having coolant flowing between a radiator and the engine, and a heating circuit, having coolant flowing between a vehicle compartment heating means and the engine;
- means for passing hot coolant through said heating circuit;
- heat exchanger means for enabling said coolant to pass therethrough, said heat exchanger means operatively coupled with said heating circuit;
- means for drawing combustion air into said engine;
- means for selectively passing said combustion air through said heat exchanger means to provide said combustion air at a given optimum temperature prior to entry into a combustion chamber of the engine in accordance with the respective operational situation.
Dependencies are inferred from the claim text.