Engine block

Details Engine block Engine block

1999-10-12

2001-09-11

Kamen, Noah P. (Department: 3747)

Internal-combustion engines

Frame construction

Horizontal cylinder

Reexamination Certificate

active

06286475

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to an engine block having at one end a lateral flange formed with an aperture for mounting of an ancillary unit, such as a pump or other accessory.
BACKGROUND OF THE INVENTION
The invention is particularly applicable to so-called structural engines, as used in agricultural tractors. Instead of being supported on mounts on a vehicle body, a structural engine, together with its transmission train, forms the unsprung mass or chassis of the vehicle. For this reason, its engine block needs to be designed to provide strength and rigidity.
The rear end of an engine block commonly has a flange that projects laterally and is used to support ancillary units, such as a fuel and a hydraulic pump to be driven by the crankshaft. The ancillary unit mates with the forward facing surface of the lateral flange and this surface must therefore be machined accurately after the engine block has been cast. In a structural engine, for additional strength, the block has laterally projecting ribs that are joined to the lateral flange on which the ancillary unit is mounted and these ribs interfere with the machining of the forward facing surface of the flange.
OBJECT OF THE INVENTION
The present invention seeks to enable an ancillary unit to be mounted on the lateral end flange of an engine without the need to machine the forward facing surface of the end flange.
SUMMARY OF THE INVENTION
According to the present invention, there is provided an engine block having at one end a lateral flange formed with an aperture for mounting of an ancillary unit such as a pump, wherein an adapter plate is mounted on the end face of the lateral flange to overlie the aperture for the ancillary unit, the surface of the adapter plate facing the aperture being machined to mate, when in use, with an ancillary unit disposed on the other side of the flange and secured to the adapter plate through the aperture in the lateral flange.


REFERENCES:
patent: 3781137 (1973-12-01), Engstrom
patent: 4218193 (1980-08-01), Mehne
patent: 4257370 (1981-03-01), Kasting
patent: 4998515 (1991-03-01), Carvalho
patent: 5458100 (1995-10-01), Neuenfeld
patent: 2026599 (1980-02-01), None

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