U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Cooling system for internal combustion engines

Patent 5875633 Issued on March 2, 1999. Estimated Expiration Date: Icon_subject April 24, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3228189

3554849

4348991

Heat recovery system including a dual pressure turbine
Patent #: 4586338
Issued on: 05/06/1986
Inventor: Barrett ,   et al.

Rankine-diesel integrated system
Patent #: 4901531
Issued on: 02/20/1990
Inventor: Kubo, et al.

Method and apparatus for increasing the efficiency of internal combustion engines Patent #: 5339632
Issued on: 08/23/1994
Inventor: McCrabb, et al.

Inventor

Application

No. 065558 filed on 04/24/1998

US Classes:

60/618Motive fluid is vaporized liquid

Examiners

Primary: Koczo, Michael

Attorney, Agent or Firm

International Class

F01K 023/10

Abstract

A heat energy recovery system for cooling an internal combustion engine is characterized by separate oil and water circuits. The oil circuit is used to lubricate and cool the engine. A heat exchanger between the oil and water circuits cools the oil and produces steam from the water. The steam is used to power a steam engine in the water circuit which in turn is used to drive accessories normally driven by the engine. The recovery of heat from the cooling oil and the generation of energy via the steam engine reduces the load on the engine, decreasing its fuel consumption and increasing its net output to drive a vehicle.

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