초록 ▼

A supercharged combustion engine including a cylinder block (1), a cylinder head (2) and a crankcase (3) containing oil, an induction air conduit (19, 21, 24) communicating with intake conduits (9) in the cylinder head. The induction air conduit is connected to a supercharging unit (23) and is provi

A supercharged combustion engine including a cylinder block (1), a cylinder head (2) and a crankcase (3) containing oil, an induction air conduit (19, 21, 24) communicating with intake conduits (9) in the cylinder head. The induction air conduit is connected to a supercharging unit (23) and is provided with a throttle valve (26) downstream of the supercharging unit. A first evacuation conduit (40, 42) connects the crankcase, via a pressure regulator (45), to the induction air conduit (19) at a point downstream of the throttle valve for evacuation of blow-by gases from the crankcase. A second evacuation conduit (40, 43) connects the crankcase with the induction air conduit (24) at a point on the intake side of the supercharging unit. A device (29) for separating oil from the evacuated blow-by gas, at least one further evacuation conduit (46) connecting a collection container (47) or some other source of harmful emissions with the evacuation conduits and non-return valves (41, 44) in the first and second evacuation conduits (42, 43) prevent gases from flowing back into the crankcase.

대표청구항 ▼

1. A supercharged combustion engine, the engine comprising:a cylinder block, a cylinder head, a crankcase containing oil, an induction air conduit communicating with intake conduits in the cylinder head, the induction air conduit being connected to a supercharging unit and is provided with a throttl

1. A supercharged combustion engine, the engine comprising:a cylinder block, a cylinder head, a crankcase containing oil, an induction air conduit communicating with intake conduits in the cylinder head, the induction air conduit being connected to a supercharging unit and is provided with a throttle valve downstream of said supercharging unit, a first evacuation conduit connecting the crankcase with the induction air conduit at a point downstream of the throttle valve for evacuation of blow-by gases from the crankcase, a second evacuation conduit connecting the crankcase with the induction air conduit at a point on the intake side of the supercharging unit, wherein each evacuation conduit is provided with a valve arranged to limit or prevent the flow of gases from the induction air conduit towards the crankcase, a pressure regulator connecting the crankcase with said first and second evacuation conduits via a common conduit, said regulator being arranged to maintain a substantially constant pressure in the crankcase, and a device for separating oil from the evacuated blow-by gas, at least one further evacuation conduit arranged for ventilation of an emission source and being connected with said first and second evacuation conduits at a point between the pressure regulator and said valves, and additional evacuation conduits connected between the pressure regulator and the point where the common evacuation conduit branches into said first and second evacuation conduits.