In an intake system of a variable air-intake characteristic type for a multi-cylinder engine, an intake air-dispensing box (30) is comprised of a dispensing box body which includes an intake air inlet, first and second intake branch pipes (38R,38L) and one...

The device (10) has a frame (14b) with intake air passages (12) and closure elements (16) for the passages. The elements are formed integrally with bearing shafts (15), and each has its own rotary axis. Several frames are located next to each other in a ca...

The induction system has a control unit (12) which from idling up to an average RPM range is fixed in a first end position(STE 1) and together with the feed lines (41,42) of a feed unit (40) forms two guide channels (48,49) supplying the cylinders (4-9) an...

Air intake control device for an internal combustion engine with an intake manifold having at least one air intake pipe for introducing air into at least one air intake passage of a cylinder of said engine, said air intake pipe provides a long, low speed p...

The device has length-adjustable resonance channels (12) between a resonance collector and two oscillating collectors (13). Connection channels (34) are positioned between the oscillating collectors and the length-adjustable parts of the resonance channels...

The switch unit, to direct the air flow into the air intake channels of an internal combustion motor, has a switched and an unswitched flow cross section (20) for each motor cylinder with flaps (12) and a shaft (27). The switched flow cross sections (20) a...

The induction unit for an engine (18) has at least one separate air collector (14), from which induction tubes (16) for the individual cylinders go to the cylinder inlets. These tubes are in the form of resonance tubes for the high revs. regions. There is ...