Waste-heat turbine unit
AssigneeDr. Ing. h.c.F. Porsche Aktiengesellschaft
InventorHelmut Striebich
Life of this patent
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Abstract
A waste-heat turbine unit is equipped with a rotating cylinder that is formed as a hollow body that carries a blading on its exterior. The blading is subjected to the exhaust gases of an internal-combustion engine that is a component of a drive assembly, particularly for motor vehicles. The blading, that is located adjacent to exhaust gas duct outlets of the internal-combustion engine, extends spirally along the cylinder. As a result, the stability of the cylinder is increased, and the heat transfer from the exterior to the interior of the cylinder is optimized, whereby the utilization of energy is improved.
Claims20
In a drive unit including an internal combustion engine and a waste heat turbine unit operated by the exhaust gases of the internal combustion engine for utilizing the energy from the exhaust gases,
- the waste heat turbine unit comprising a rotatable cylinder member having an exterior and a hollow interior, blading exposed to the exhaust gases and carried on the exterior of the cylinder member, a steam turbine unit, and means for supplying a liquid medium, convertible into steam, to the interior of the cylinder member, the medium being expandable in the steam turbine unit for generating power, wherein the blading extends spirally at the circumference of the cylinder member and extends over at least a substantial portion of the length of the cylinder member.
Dependencies are inferred from the claim text.