A passive cooling system includes a fan configured to generate an air flow path for a radiator, the air flow path extending from the fan to the radiator and a cooling pipe extended between a turbocharger and an intake manifold, the cooling path positioned in the air flow path between the fan and the radiator.

A blow-by gas device of a supercharger-equipped engine includes a blow-by gas passage that introduces blow-by gas into an intake passage via a positive crankcase ventilation (PCV) valve. A supercharger has a supercharger rotor provided integrally with a rotation shaft rotatably supported on a bearing part. A space communicating with the bearing part is connected to a communication passage. The communication passage guides the blow-by gas into the space.

An intake air circuit is structured to transmit intake air from a turbocharger compressor to an intake manifold of an engine. A charge air cooler (CAC), a bypass line, and a bypass heater are each positioned along the intake air circuit in parallel with each other. A first control valve is structured to controllably divert the intake air around the CAC. A second control valve is structured to controllably divert the intake air around at least one of the bypass line and the bypass heater. A controller operatively coupled to each of the engine, and the first and second control valves is structured to control each of the first and second control valves to cause the intake air to flow along a determined desired flow path based on each of measured ambient temperature and measured engine load.

A condensate discharge device of an intercooler for a vehicle is provided to remove condensate collected inside an intercooler. The device includes an ejector hose that is disposed between an inlet tank and an outlet tank to form a flow path for an air flow between the inlet tank and the outlet tank. An ejector housing is disposed on one side of the outlet tank. The condensate collected in the outlet tank is introduced into the ejector housing. An ejector nozzle is disposed in the ejector housing and injects the air introduced from the ejector hose into an inner space of the outlet tank. When injecting the air, to inject the condensate, which is introduced from the outlet tank into the ejector housing, injecting the inner space of the outlet tank with the air.

A charge air cooler, e.g., as used with a supercharger having meshing rotors in sealing contact with a housing, the housing having an inlet port to admit air into the meshing rotors and the housing having an outlet port to expel air from the meshing rotors, the charge air cooler having an inlet-side core for transmitting the flow of pressurized air, and an outlet-side core receiving the flow of pressurized air transmitted from the inlet-side core and further transmitting the flow of pressurized air, each core having coolant conduits and fins joined to the coolant conduits for contact with the flow of pressurized air, the fins being arranged with a predetermined density, wherein the inlet-side core fin density is lower than the outlet-side core fin density, whereby the inlet-side core presents less resistance to the flow of pressurized air than the outlet-side core and the outlet-side core presents greater surface area for heat conductance from the flow of pressurized air than the inlet-side core. Charge air coolers with this configuration provide improved pressure and temperature characteristics in a supercharger's flow of pressurized air to an engine.

A method of operating a forced induction gaseous-fueled engine includes mixing gaseous-fuel and engine intake air to form a mixture at a fuel mixer. The method includes delivering the mixture to an intake manifold by at least partially bypassing a charge air cooler.

Methods and systems are provided for a turbocharger comprising a compressor inlet shaped to mitigated condensate formation therein. In one example, system may include a condensate trap which runs along an inner wall of the compressor inlet and is shaped to trap condensate.

Nonwoven abrasive articles comprise a nonwoven abrasive member having an overlayer composition comprising a fatty acid metal salt disposed thereon adjacent to a working surface. The nonwoven abrasive member comprises abrasive particles adhered to a fiber web by a binder. The abrasive particles may be exposed and/or the nonwoven abrasive member may have suitable frictional properties. Methods of making the same are also disclosed.

A condensate discharge device of an intercooler for a vehicle is provided to remove condensate collected inside an intercooler. The device includes an ejector hose that is disposed between an inlet tank and an outlet tank to form a flow path for an air flow between the inlet tank and the outlet tank. An ejector housing is disposed on one side of the outlet tank. The condensate collected in the outlet tank is introduced into the ejector housing. An ejector nozzle is disposed in the ejector housing and injects the air introduced from the ejector hose into an inner space of the outlet tank. When injecting the air, to inject the condensate, which is introduced from the outlet tank into the ejector housing, injecting the inner space of the outlet tank with the air.

An air filter device for a motor vehicle is provided with a filter housing having an air inlet and an air outlet, a filter insert which is received in the filter housing and divides the inside of the filter housing into an untreated air section and a pure air section, and a bypass line for supplying air into the untreated air section. The bypass line extends from a connection opening in the filter housing to a cooler, especially a charge air cooler of the motor vehicle.