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US08166948B2 Throttle-less engine with improved variable valve system 失效
无节流发动机,改进了可变阀门系统

Throttle-less engine with improved variable valve system
Abstract:
To improve the precision of the control of the charge of a cylinder during idling and low revs/light load operation, a bypass feeding path of low flow capacity provides the cylinder with air or mixture while the high flow capacity intake valves stay closed.
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