Method of controlling the combustion cycle in a combustion engine
OwnerLars G. B. Hedelininventor
Life of this patent
Estimating the term…
Abstract
In a combustion engine, the amount of working medium is controlled by allowing the engine to suck in an amount of working medium corresponding to full gas operation, of which a portion is then allowed to flow out again without being compressed, while an amount proportional to the current load is retained and compressed, the compression ratio being regulated as a function of the amount of working medium retained. In such an engine there is a movable member (4) for adjusting the compression ratio, the position of said member being controlled by a control means (9). Furthermore, there is at least one spill flow valve (12), the open-time of which is variable as a function of the current load of the engine.
Claims6
A method of controlling the combustion cycle in an internal combustion piston engine in which a gaseous working medium is compressed, is combusted and performs work, and in which the compression ratio is varied during operation, comprising:
- regulating the amount of working medium by operating the engine to draw in a maximum amount of working medium corresponding, to full gas operation and then causing a portion of the working medium to flow out again without being compressed;
- retaining and compressing an amount of the working medium proportional to the current load;
- and
- regulating the compression ratio as a function of the amount of working medium retained to obtain a substantially constant compression pressure under varying operating conditions.
Dependencies are inferred from the claim text.