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US 6,866,031 B2Granted
Direct injection internal combustion engine
AssigneeVolkswagen Aktiengesellschaft
InventorsLeo Spiegel, Günter Sōhlke, Gerrit Suck
Life of this patent
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Abstract
An internal combustion engine, especially an Otto engine, with intake valves and with a fuel injector, which is arranged and designed so that it injects the fuel directly into a combustion chamber of working cylinders of the internal combustion engine. At least in the region of the neck, the intake valves have a surface that is designed to counteract the formation of carbon deposits.
Claims12
An internal combustion engine, comprising:
- working cylinders having a combustion chamber;
- intake valves;
- and a fuel injector arranged to inject fuel directly into the combustion chamber of the working cylinders, the intake valves having a neck and a catalytic surface at least in a region of the neck so as to counteract formation of carbon deposits.
Dependencies are inferred from the claim text.