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Vehicle-driving-method-and-hybrid-vehicle-propulsion-system

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Vehicle driving method and hybrid vehicle propulsion system

Details

Inventors: Hatanaka, Takefumi;
Assignee:
Primary Examiner: Mai; Lanna
Assistant Examiner: To; Toan
Attorney, Agent or Firm: Jordan and Hamburg LLP

A vehicle driving method and hybrid propulsion system are disclosed. In the vehicle driving method and hybrid propulsion system, a heat engine is intermittently operated to provide a first power output and hot exhaust. A heat recovery unit containing thermal storage means is utilized to recover and store waste of hot exhaust, thereby enabling continuous production of motive gases during non-operation period of the heat engine. An expansion turbine is coupled to the heat engine and expands the motive gases to produce a second power output in a continuous fashion. The vehicle is driven by the first and second power outputs. A control unit operates the heat engine in an on/off mode to intermittently supply the hot exhaust to heat recovery unit, thereby providing remarkable fuel economy with reduced pollutants.

DETAILED DESCRIPTION It is, therefore, an object of the present invention to provide a method of driving a vehicle, which method can overcomes the shortcomings encountered in prior art.
It is another object of the present invention to provide a hybrid propulsion system which is simple in structure, high in efficiency and low in manufacturing cost.
It is a further object of the present invention to provide a hybrid propulsion system for energy efficient and low emission vehicles.
It is still another object of the present invention to provide a hybrid propulsion system which enables vehicles to run 100 km per liter at greater fuel efficiency than required by PNGV (Partnership for a New Generation of Vehicles) in U.
S.
A.
A further object of the present invention is to provide a hybrid propulsion system for a low emission vehicle which can achieve a new low emission vehicle regulation known as "LEV II" which starts from the year 2004 in U.
S.
A.

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