Heating systems – Heat and power plants – Vehicle
Patent
1997-07-02
1998-08-11
Bennett, Henry A.
Heating systems
Heat and power plants
Vehicle
122 26, 126247, B60H 100
Patent
active
057915580
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a heating system for a vehicle in which heat resulting from circulating water is used for heating a passenger compartment, etc., of a vehicle.
BACKGROUND ART
In a conventional general heating system for a vehicle, an engine housing (i.e., a component part of an engine) is constituted by a cylinder block, a cylinder head, and the like. In the cylinder block, there is disposed a built-in water pump which works as a complementary unit. Further, in the cylinder block, a water jacket is formed which is communicated with a pump chamber of the water pump. A drive shaft of the water pump is driven by an engine by way of a belt and a pulley. Furthermore, the water jacket is communicated with a radiator and a heater core by way of a water passage which can be opened and closed by a thermostat. Thus, circulating water is circulated in the water jacket, the pump chamber of the water pump, the water passage, the radiator, and the heater core.
Hence, in the conventional general heating system, the engine is cooled by the cold circulating water. Then, the circulating water is heated during the cooling of the engine, and the thus heated circulating water is utilized by the heater core to heat a passenger compartment, etc., of a vehicle. When the circulating water is heated excessively, the thermostat opens the water passage so that the circulating water is cooled by the radiator.
However, the conventional general heating system cannot fully heat a passenger compartment of a vehicle when the engine is started in a cold region, or the like, because the passenger-compartment heating operation depends solely on the heat generation of the engine.
In addition, when the engine is cold, and even when the engine tries to heat itself by closing the water passage with the thermostat, the engine cannot carry out the combustion optimally before it is heated to a certain extent by its own heat generation. Moreover, it is believed that the engine suffers from the problems which result from a low combustion efficiency and an exhaust gas.
Even if a complementary thermal source is provided independently of the engine in order to overcome the drawbacks, the construction around the engine is enlarged in size. Eventually, there arises a problem in that the space for boarding the complementary thermal source is reduced inevitably in the congested engine room. Moreover, the complementary thermal source requires a pulley, a drive shaft, etc., independently. As a result, the number of component parts increases to push up the manufacturing cost.
The present invention has been developed in view of the aforementioned conventional circumstances. It is therefore an assignment to the present invention to provide a heating system for a vehicle which does not require a large boarding space in an engine room very much, which can be manufactured at a reduced cost, and which can fully heat a passenger compartment of a vehicle when an engine is started.
Moreover, it is another assignment to the present invention to provide a heating system for a vehicle which can fully warm up an engine when the engine is started.
Measures for Solving the Assignment
A heating system for a vehicle set forth in claim 1 comprises: jacket are formed, the auxiliary water jacket disposed next to the heat-generating chamber; engine by way of a heater pulley; drive shaft; and heat-generating chamber and an outer surface of the rotor, and caused to generate heat by rotation of the rotor; viscous heater and the heater drive shaft thereof; of the viscous heater by way of a water passage; and passage and the heater core.
In the vehicle heating system set forth in claim 1, the rotor of the viscous heater is rotated in the heat-generating chamber when the heater drive shaft is driven by the engine by way of the heater pulley. Accordingly, the viscous heater is sheared to generate heat in the space between the wall surface of the heat-generating chamber and the outer surface of the rotor. The heat thus generated by the viscous fluid i
REFERENCES:
patent: 4993377 (1991-02-01), Itakura
Ban Takashi
Hoshino Tatsuyuki
Mori Hidefumi
Takenaka Kenji
Yagi Kiyoshi
Bennett Henry A.
Boles Derek S.
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
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