초록 ▼

An internal-combustion engine is provided with an exhaust pipe and an exhaust gas catalyst which can be preheated by a burner. Fuel is fed to this burner from a fuel tank by way of a fuel pump. The pressure of approximately 3 bar existing in a first fuel pipe is increased by an output amplifier to a

An internal-combustion engine is provided with an exhaust pipe and an exhaust gas catalyst which can be preheated by a burner. Fuel is fed to this burner from a fuel tank by way of a fuel pump. The pressure of approximately 3 bar existing in a first fuel pipe is increased by an output amplifier to approximately 10 bar. The output amplifier comprises a receiving housing and a guide housing, which is arranged therein as well as a differential piston unit comprising a large piston and a small piston. The differential piston unit has a passage bore, through which the fuel flowing into the pressure space of the receiving housing arrives in the high-pressure space of the guide housing. In the event of displacement of the differential piston, which is acted upon by the pressure medium, in one direction, the fuel present in the high-pressure chamber arrives at 10 bar in the second fuel pipe and from there in the burner.

대표청구항 ▼

An exhaust system for an internal-combustion engine of a vehicle, comprising a fuel tank, a fuel-operated burner, and a catalyst operatively configured to be preheated by the fuel-operated burner into which the fuel is fed from the fuel tank via a pump and a fuel pipe fed by the pump, wherein a self

An exhaust system for an internal-combustion engine of a vehicle, comprising a fuel tank, a fuel-operated burner, and a catalyst operatively configured to be preheated by the fuel-operated burner into which the fuel is fed from the fuel tank via a pump and a fuel pipe fed by the pump, wherein a self-actuated output amplifier is operatively arranged between the pump and the burner to increase pressure in the fuel pipe.