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METHOD FOR PROVIDING ACTUAL EXPANDING STROKE DURING LONGER EXPANSION STROKE IN TERMS OF PISTON STROKE THAN IN ACTUAL COMPRESSING STROKE DURING COMPRESSION STROKE FOR CYLINDER INJECTION FOUR-CYCLE ENGINE AND COUNTERMEASURES FOR CASE OF OVERLONG STROKE
METHOD FOR PROVIDING ACTUAL EXPANDING STROKE DURING LONGER EXPANSION STROKE IN TERMS OF PISTON STROKE THAN IN ACTUAL COMPRESSING STROKE DURING COMPRESSION STROKE FOR CYLINDER INJECTION FOUR-CYCLE ENGINE AND COUNTERMEASURES FOR CASE OF OVERLONG STROKE
PROBLEM TO BE SOLVED: To provide a method for providing an actual expanding stroke during an expansion stroke which is longer, in terms of a piston stroke, than in actual compressing stroke during a compression stroke for a cylinder injection four-cy cle engine, and to provide countermeasures for the case of overlong strokes. SOLUTION: A valve (b) and a valve (c) are provided during the compression stroke. Countermeasures, when the valve (b) and valve (c) are opened too wide during the compression stroke, are set by providing a valve (a) and a valve (b), at expansion stroke (refer to descriptions of symbols in the specification for the valves (a), (b), (c), and (d)).
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