SHAFT DRIVEN ENGINE ACCESSORIES
An engine accessory assembly includes a common shaft and at least two axially aligned engine accessories drivingly connected to the common shaft. The at least two axially aligned engine accessories may be an alternator, a motor generator unit, a vacuum pump, a transmission oil pump, an engine oil pump or a water pump. In an example embodiment, the common shaft includes a spline and the at least two axially aligned engine accessories are drivingly engaged with the spline.
1 . An engine accessory assembly comprising:
a common shaft; and,
at least two axially aligned engine accessories selected from the group of:
an alternator;
a motor generator unit;
a vacuum pump;
a transmission oil pump;
an engine oil pump; and,
a water pump;
drivingly connected with a common shaft.
2 . The engine accessory assembly wherein the common shaft includes a spline and at least one of the at least two axially aligned engine accessories is drivingly engaged with the spline.
3 . The engine accessory assembly of claim 1 wherein:
one of the at least two axially aligned engine accessories is the engine oil pump; and,
the engine oil pump includes a mounting bracket for fixing the engine accessory assembly to an engine.
4 . The engine accessory assembly of claim 1 further comprising a hose wherein:
one of the at least two axially aligned engine accessories is the water pump with an outlet;
another of the at least two axially aligned engine accessories is the motor generator unit with a cooling inlet; and,
the hose connects the water pump outlet with the motor generator unit cooling inlet.
5 . The engine accessory assembly of claim 1 wherein:
one of the at least two axially aligned engine accessories includes a polygonal protrusion;
another of the at least two axially aligned engine accessories includes a polygonal recess, complementary to the polygonal protrusion; and,
the polygonal protrusion is installed in the polygonal recess.
6 . The engine accessory assembly of claim 5 wherein:
one of the at least two axially aligned engine accessories is the vacuum pump;
another of the two at least axially aligned engine accessories is the transmission pump; and,
a polygonal protrusion on the vacuum pump is the same as a polygonal protrusion on the transmission pump.
7 . The engine accessory assembly of claim 5 where the polygonal protrusion is selected from the group of:
a triangle;
a square;
a pentagon;
a hexagon; and
an octogon.
8 . The engine accessory assembly of claim 5 wherein the one of the at least two axially aligned engine accessories and the another of the at least two axially aligned engine accessories are joined together with fasteners.
9 . The engine accessory assembly of claim 1 wherein the common shaft is connectable to an engine crankshaft and/or a transmission input shaft.
10 . The engine accessory assembly of claim 1 further comprising:
a radially offset air conditioner compressor; and,
a belt drivingly connecting the common shaft to the axially offset air conditioner compressor.