Variable Compression Ratio Piston-Crank System

Variable Compression Ratio Piston-Crank System | NISSAN | TECHNOLOGICAL DEVELOPMENT ACTIVITIES Piston motion in the conventional mechanism is essentially asymmetrical, with rapid motion occurring at top dead center. That unbalance

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Variable Compression Ratio Piston-Crank System

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06-08-2011, 10:37 AM

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theDreamer

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Variable Compression Ratio Piston-Crank System

Variable Compression Ratio Piston-Crank System | NISSAN | TECHNOLOGICAL DEVELOPMENT ACTIVITIES

Quote:

Piston motion in the conventional mechanism is essentially asymmetrical, with rapid motion occurring at top dead center. That unbalance deteriorates engine vibration in the case of conventional 4-cylinder engines.
With the multilink VCR mechanism, the piston's reciprocal action achieves ideal simple harmonic motion, resolving the unbalance. This enable low vibration property of in-line 4 cylinder engine close to that of V type 6 cylinder engines.

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