Water-cooled four cycle engine

Details Water-cooled four cycle engine Water-cooled four cycle engine

1998-09-14

2000-10-24

McMahon, Marguerite

Internal-combustion engines

Cooling

With liquid coolant circulating means

F01P 510

Patent

active

061350664

ABSTRACT:
To provide a compact water-cooled four cycle engine suitable for a hybrid type power unit. The tension of a belt is increased by loosening bolts, turning an eccentric tube fitting, and moving a common pulley. After the tension of the belt is thus adjusted, the bolts are fastened. A water pump, which is supported by a shaft portion fitted in a guide groove and by the two bolts, are not moved except for the step of adjusting the tension of the belt 122. Since the tensioner serves as the pump pulley, it is possible to reduce the number of pulleys and hence to simplify the layout of the pulleys and reduce the number of parts. In accordance with another aspect of the present invention, a thermostat is mounted in a water jacket near an intake port of a cylinder head and is covered with an intake manifold. It is therefore unnecessary to provide a case and a lid for mounting the thermostat.

REFERENCES:
patent: 2497402 (1950-02-01), Findley
patent: 4934342 (1990-06-01), Tamba et al.
patent: 5809960 (1998-09-01), Hojyo et al.
patent: 5836270 (1998-11-01), Aoki et al.
patent: 5881682 (1999-03-01), Hirose et al.

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