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What is Variable Compression Ratio in Gasoline Engines about?
1. Downsizing engines with turbocharging enables CO2 reductions but requires lowering the compression ratio at higher loads to prevent knocking. 2. FEV developed a two-stage variable compression ratio mechanism to address the efficiency disadvantages of a lowered compression ratio at part loads. 3. The mechanism uses an eccentric sleeve on the connecting rod to vary the effective length and compression ratio. Simulation results showed the system could switch compression ratios within 0.6 seconds to meet
- Author
- Rahul Sen
- Language
- EN