Liquid-cooled internal combustion engine with liquid-cooled cylinder head and with liquid-cooled cylinder block
AssigneeFord Global Technologies, LLC
InventorHans Guenter Quix
Life of this patent
Estimating the term…
Abstract
One approach to provide engine cooling for an internal combustion engine includes pumping coolant from a pump output, in parallel, directly to a block and a head upper coolant jacket; flowing coolant from the block directly to a head lower coolant jacket; discharging coolant from the upper and lower jackets only to a control block; and selectively directing cooling from the control block to each of: a cabin heater; radiator bypass line; and the radiator. In this way, an increased demand for pre-warmed coolant can be met, for example in the case of low outside temperatures.
Claims20
An engine method, comprising:
- pumping coolant from a pump output, in parallel, directly to a block and a head upper coolant jacket;
- flowing coolant from the block directly to a head lower coolant jacket;
- discharging coolant from the upper and lower jackets only to a control block;
- selectively directing cooling from the control block to each of:
- a cabin heater;
- the radiator bypass;
- and the radiator.
An engine method, comprising:
- pumping coolant from a pump output, in parallel, directly to an engine cylinder block and a cylinder head upper coolant jacket;
- flowing coolant from the cylinder block directly to a cylinder head lower coolant jacket;
- discharging coolant from the upper and lower jackets only to a control unit;
- selectively directing cooling from the control unit to each of:
- 1) a cabin heater, and then to a radiator bypass, 2) the radiator bypass, and 3) the radiator.
A liquid-cooled internal combustion engine, comprising:
- at least one cylinder head and one cylinder block, wherein
- the at least one cylinder head is equipped with at least one integrated coolant jacket, said first coolant jacket having, at the inlet side, a first supply opening for the feed of coolant and, at the outlet side, a first discharge opening for the discharge of the coolant,
- the cylinder block is equipped with at least one integrated coolant jacket, said coolant jacket, which is associated with the block, having, at the inlet side, a second supply opening for the feed of coolant and, at the outlet side, a second discharge opening being provided for the discharge of the coolant, and,
- the discharge openings are connectable to the supply openings to form a coolant circuit,
- wherein
- the first discharge opening is connectable to the first supply opening via a heating circuit line in which there is arranged a coolant-operated vehicle interior heater,
- the second discharge opening is connectable to the second supply opening via a recirculation line in which there is arranged a heat exchanger, and
- the second discharge opening is connectable to the second supply opening via a bypass line.
Dependencies are inferred from the claim text.