Method of generating gas pressure in an internal combustion engine, and apparatus for carrying out this method
AssigneePierburg GmbH
InventorsRainer Sudbeck, Hans Baumgartner
Life of this patent
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Abstract
In an internal combustion engine a rotary gas motor, driven by the intake gas of the engine, drives pump providing secondary air to the engine exhaust at low engine load, and at high load a clutch connects the pump and the motor to the engine shaft, the output of the pump and the motor being delivered to the engine intake.
Claims33
In a method of generating gas pressure in an internal combustion engine wherein a gas motor (2) continually driving a gas pump (3) serving for the generation of gas pressure is driven by the gas drawn in by the internal combustion engine, the improvement comprising the steps of:
- driving the gas motor (2) which drives the gas pump (3) by the gas drawn in by the internal combustion engine in the lower load range of the internal combustion engine;
- coupling the gas motor (2) in common with the gas pump (3) to a disc (16) driven by the internal combustion engine and driving said gas motor by said disc in the upper load range of said internal combustion engine;
- and
- supplying the gas delivered to the gas pump (3) to the gas stream conducted through the gas motor (2).
Apparatus for generating gas pressure in an internal combustion engine comprising a gas motor (2) driven by the gas sucked in by the internal combustion engine, and a gas pump with which said gas motor is drivingly connected, said gas pump (3) serving for generating the gas pressure, wherein the gas motor (2) can be coupled to a disc (16) driven by the internal combustion engine and the gas pump (3) possesses a gas outlet pipe (13) to be connected to a gas inlet pipe (14) of the internal combustion engine.
Dependencies are inferred from the claim text.