CRANKCASE VENTILATION APPARATUS

摘要

A vehicle may include an internal combustion engine having a crankcase and a supercharging apparatus, and a crankcase ventilation apparatus having at least one oil-separating apparatus including at least one oil separator. An oil return line may communicate separated oil from the crankcase ventilation apparatus to the crankcase. An ejector pump may be driven via a compressed air flow of the supercharging apparatus and may be configured to generate an underpressure for driving a blow-by gas. The crankcase ventilation apparatus may include a pump control valve configured to at least one of regulate and control the compressed air flow through the ejector pump.

主权项

1. A vehicle, comprising:
an internal combustion engine including a crankcase and a supercharging apparatus, a crankcase ventilation apparatus including at least one inertia-based oil-separating apparatus having at least one inertia-based oil separator, an oil return communicating separated oil from the crankcase ventilation apparatus to the crankcase, and an ejector pump driven via a compressed air flow of the supercharging apparatus and configured to generate an underpressure for driving a blow-by gas, wherein the crankcase ventilation apparatus further includes a pump control valve configured to at least one of regulate and control the compressed air flow through the ejector pump, the pump control valve including a closure part arranged force-loaded against a valve seat via a biasing force, wherein the closure part is displaced away from the valve seat counter to the biasing force to open the pump control valve in response to at least one of a pressure difference between a valve inlet and a valve outlet exceeding a pressure difference threshold and an inlet-side pressure of the ejector pump exceeding an inlet-side pressure threshold.