Internal combustion engine
AssigneeDeutz Aktiengesellschaft
InventorsRalph Stengel, Dominic Weber, Peter Broll, Daniel Dammer
Life of this patent
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Abstract
An internal combustion engine including a urea-water solution injection in the exhaust system, includes at least one urea-water solution tank, at least one pump, at least one intake line leading to the pump, at least one urea-water solution metering valve which is connected to the pump with the aid of a pressure line, and at least one return line which leads from the pump to the urea-water solution tank and at whose end opposite to the pump a filter element is situated, as well as at least one urea-water solution sensor situated in the urea-water solution tank.
Claims14
An internal combustion engine including a urea-water solution injection in an exhaust system, the internal combustion engine comprising:
- a urea-water solution tank;
- a pump;
- an intake line leading to the pump;
- a urea-water solution metering valve connected to the pump via a pressure line;
- a return line leading from the pump to the urea-water solution tank;
- a filter configured for retaining air bubbles generated by the pump situated at an end of the return line opposite to the pump to prevent or reduce an amount of the air bubbles from entering into the urea-water solution tank;
- and
- a urea-water solution sensor situated in the urea-water solution tank configured for measuring a proportion of urea in a solution with water in the urea-water solution tank.
Dependencies are inferred from the claim text.