BigPatents India

An engine having a timing gear cover (20) with integrally formed coolant inlet and discharge fittings (54, 56) for connection to a radiator. The cover forms a water pump Inlet chamber (58) and a water pump outlet chamber (64) defined by the walls (42, 38, 36) of the cover and the front face (12) of the engine block. The lower pressure water pump Inlet chamber (58) separates the higher pressure water pump outlet chamber (64) from a timing gear chamber (74) to prevent coolant leakage from the water pump Inlet chamber Into the timing gear chamber where the lubricating oil will be contaminated. The water pump housing also includes a drain fitting (76) for draining coolant from the engine. (FIG. – 1,2)