초록 ▼

An internal combustion engine includes separate engine cooling and engine lubrication circuits, both of which receive engine oil pumped from the oil sump. The cooling circuit flows oil around hot engine parts and then to a cab heater and to a heat exchanger or a bypass line to sump. A valve controls

An internal combustion engine includes separate engine cooling and engine lubrication circuits, both of which receive engine oil pumped from the oil sump. The cooling circuit flows oil around hot engine parts and then to a cab heater and to a heat exchanger or a bypass line to sump. A valve controls oil flow to the heat exchanger and to the bypass line as a function of oil temperature in a part of the lube circuit in the engine block. The heat exchanger has a pair of outlets which discharge oil at different temperatures and at different flow rates. Less oil flows from the cooler outlet and this lesser flow is communicated to sump via a charge air cooler. The hotter outlet communicates the larger oil flow directly to sump.

대표청구항 ▼

In a vehicle having an internal combustion engine, an engine cooling and lube system comprising: an engine oil sump; an engine oil pump; a flow divider having an inlet communicated with an outlet of the pump, a first outlet and a second outlet; an engine cooling circuit connected between the first o

In a vehicle having an internal combustion engine, an engine cooling and lube system comprising: an engine oil sump; an engine oil pump; a flow divider having an inlet communicated with an outlet of the pump, a first outlet and a second outlet; an engine cooling circuit connected between the first outlet and the sump for cooling heated parts of the engine; an engine lube circuit connected between the second outlet and the sump for lubricating parts of the engine subject to wear, the lube circuit being connected in parallel with the engine cooling circuit; and a vehicle cab heater comprising a fluid-to-air heat exchanger connected in the engine cooling circuit between the engine and the sump.