This blow-by gas recirculation device for an internal combustion engine of a vehicle is provided with a vacuum pump which supplies negative pressure to a brake booster. The blow-by gas recirculation device includes: a fresh-air introduction passage for introducing a fresh air into crankcase from an intake passage upstream of a throttle valve; a PCV device for recirculating, to the intake passage downstream of the throttle valve, blow-by gas in the crankcase; and a suction/recirculation means which uses the vacuum pump to suck the blow-by gas from inside the crankcase, in a region where the blow-by gas ventilation quantity by the PCV device is insufficient, and recirculate the blow-by gas to the intake passage, while the fresh air is being introduced from the fresh-air introduction passage. As a result, the blow-by gas concentration in the crankcase is reduced, engine oil contact opportunities are reduced, and oil deterioration is inhibited.
BLOW-BY GAS RECIRCULATION DEVICE FOR INTERNAL COMBUSTION ENGINE
2018-06-07
Patent
Electronic Resource
English
IPC: | F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F01M Schmierung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , LUBRICATING OF MACHINES OR ENGINES IN GENERAL |
Blow-by gas recirculation device for internal combustion engine
European Patent Office | 2020
|BLOW-BY GAS RECIRCULATION DEVICE FOR INTERNAL COMBUSTION ENGINE
European Patent Office | 2017
|Blow-by gas recirculation device for internal combustion engine
European Patent Office | 2019
|BLOW-BY GAS RECIRCULATION DEVICE FOR INTERNAL COMBUSTION ENGINE
European Patent Office | 2018
|BLOW-BY GAS RECIRCULATION DEVICE FOR INTERNAL COMBUSTION ENGINE
European Patent Office | 2017
|