Engine having multiple pumps driven by a single shaft

Details Engine having multiple pumps driven by a single shaft Engine having multiple pumps driven by a single shaft

1999-07-15

2001-09-18

Dolinar, Andrew M. (Department: 3747)

Internal-combustion engines

Charge forming device

With fuel pump

C123S041470

Reexamination Certificate

active

06289878

ABSTRACT:

TECHNICAL FIELD
The present invention relates generally to engines having multiple pumps, and more particularly to engines having multiple pumps driven by a single shaft.
BACKGROUND ART
Traditionally, for engines employing multiple fluid sub-systems, a separate driving mechanism is required to power the fluid pump included in each fluid sub-system. Therefore, for engines including a fuel injection system, an engine lubricating system and an additional system, three shafts were a necessity. To make engines more compact and reliable, it is desirable to reduce the number of shafts required for operation of the pumps included in the various engine fluid sub-systems.
The present invention is directed to overcoming one or more of the problems set forth above.
SUMMARY OF THE INVENTION
An engine includes an engine housing. A first engine fluid sub-system that includes a first pump and the engine housing defining a first fluid passage is also included in the engine. The engine also includes at least one additional engine fluid sub-system that includes a second pump and the engine housing defining a second fluid passage. A rotating shaft is at least partially positioned in the engine housing, the first pump and the second pump.


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