The present invention relates to a crank case ventilation system for an internal combustion engine that has a two-stage air charge boosting system. An air inlet system supplies the engine with air that may be pressurised by an upstream supercharger and a downstream turbocharger in series. A crank ca
The present invention relates to a crank case ventilation system for an internal combustion engine that has a two-stage air charge boosting system. An air inlet system supplies the engine with air that may be pressurised by an upstream supercharger and a downstream turbocharger in series. A crank case evacuation system draws crank case gasses from a crank case and introduces said gasses into the air inlet system, through either a first conduit or a second conduit, depending on the setting of a pressure-regulated control valve. The first conduit is used to introduce said gasses upstream of the first boost stage when this stage is operational, and when the first boost stage is not operational, the second conduit is used to introduce said gasses downstream of the first boost stage and upstream of the second boost stage.
대표청구항▼
The present invention relates to a crank case ventilation system for an internal combustion engine that has a two-stage air charge boosting system. An air inlet system supplies the engine with air that may be pressurised by an upstream supercharger and a downstream turbocharger in series. A crank ca
The present invention relates to a crank case ventilation system for an internal combustion engine that has a two-stage air charge boosting system. An air inlet system supplies the engine with air that may be pressurised by an upstream supercharger and a downstream turbocharger in series. A crank case evacuation system draws crank case gasses from a crank case and introduces said gasses into the air inlet system, through either a first conduit or a second conduit, depending on the setting of a pressure-regulated control valve. The first conduit is used to introduce said gasses upstream of the first boost stage when this stage is operational, and when the first boost stage is not operational, the second conduit is used to introduce said gasses downstream of the first boost stage and upstream of the second boost stage. S-5444931, 19950800, Hillstrom, 040/574.X; US-5613763, 19970300, Hillstrom et al., 362/812.X; US-5644860, 19970700, Piper et al., 040/579; US-5746503, 19980500, Hillstrom et al., 362/812.X; US-RE36039, 19990100, Hillstrom et al., 040/577.X; US-5931564, 19990800, Hillstrom et al.; US-6123442, 20000900, Freier et al., 040/547.X; US-6154994, 20001200, O'Brien et al., 040/575; US-6174065, 20010100, Schurch, 362/812.X; US-6202333, 20010300, Grate et al., 040/575
Wood,Terry G.; Siuchta,Grzegorz; Terry,Wesley J., System and method for relieving engine back-pressure by selectively bypassing a stage of a two-stage turbocharger during non-use of EGR.
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