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US 7,597,071 B1Granted
Apparatus and method for establishing dual compression ratios within an internal combustion engine to improve mileage
OwnerGene Hirsinventor
Life of this patent
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Abstract
An apparatus and method for establishing two operating compression ratios in an internal combustion engine resulting in improved mileage and including the provision of a fuel additive vapor for reducing a required temperature for compression.
Claims7
An apparatus for an “Otto” engine for increasing engine efficiency by operating with two compression ratios, comprising;
- the engine using a standard compression ratio during engine warming period, the engine automatically transferring to a higher ratio after the engine has reached a higher temperature level;
- a connecting rod journal supported on an eccentric sleeve riding on a crank shaft pin and hydraulically activated to rotate 180 degrees with its affixed ring gear meshing with a pinion gear keyed to a hydraulic motor located on the crank shaft arm and supplied by a hydraulic pump supplied through and on the crank shaft;
- a water pump generating a vapor mixing with an incoming engine air to prevent pre-ignition within each cylinder of the engine.
A method of operating an Otto cycle engine with two compression ratios to reach a higher combustion chamber pressure, comprising the steps of;
- injecting a water spray in an engine air intake under starting conditions and in order to reduce a temperature of compression;
- advancing the connecting rod by rotating an eccentric sleeve on a crank shaft pin to reduce a combustion chamber volume and in response to sensing a higher engine coolant temperature.
Dependencies are inferred from the claim text.