| 摘要 |
An internal combustion engine crankcase ventilation system includes a flow control valve in a line connecting the crankcase with the engine induction system so as to control the flow of crankcase vapors to maintain a proper mixture in the inlet charge. In preferred form, a thermostatic disc valve is provided at one end of the flow control valve to shut off the flow of crankcase vapors under cold engine starting and warmup conditions. When the thermostatic disc is heated to a predetermined point by engine operation, it snaps open to a position which permits a sufficient flow of crankcase vapors to avoid any significant effect on the calibration of the flow control valve with which it is used.
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