US 9,810,111 B2
Oil supply structure of water-cooled internal combustion engine
Hiroshi Sotani, Wako (JP); and Hiroshi Yokota, Wako (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Sep. 3, 2015, as Appl. No. 14/844,718.
Claims priority of application No. 2014-189532 (JP), filed on Sep. 18, 2014.
Prior Publication US 2016/0084147 A1, Mar. 24, 2016
Int. Cl. F01M 1/02 (2006.01); F02M 25/00 (2006.01); F01P 5/10 (2006.01); F01M 1/10 (2006.01); F01M 5/00 (2006.01); F01P 5/12 (2006.01); F01M 11/00 (2006.01)
CPC F01M 1/02 (2013.01) [F01P 5/10 (2013.01); F01M 1/10 (2013.01); F01M 5/002 (2013.01); F01M 11/00 (2013.01); F01M 2001/0276 (2013.01); F01P 5/12 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An oil supply structure of a water-cooled internal combustion engine in which an oil pump drive shaft of an oil pump is coaxially coupled with one end of a balancer shaft placed parallel with a crankshaft and a water pump drive shaft of a water pump is coaxially coupled with the other end of the balancer shaft, comprising:
an oil cooler being positioned adjacent to and in communication with the oil pump;
an oil filter being positioned adjacent to and in communication with the oil pump;
an engine case cover for covering the oil pump from a side of the internal combustion engine opposite to a side of the internal combustion engine where the water pump is positioned;
said oil pump comprising:
a scavenging pump for pumping oil to an oil tank;
a clutch oil pump for pressure-feeding oil from the oil tank to a hydraulic clutch; and
an engine oil pump for supplying oil to each lubrication portion of the internal combustion engine are placed side by side on the oil pump drive shaft; and
said scavenging pump, said clutch oil pump and said engine oil pump being coaxially aligned relative to each other and with the one end of the balancer shaft with said clutch oil pump being sandwiched between the scavenging pump and the engine oil pump.