Cooling circuit of an internal combustion engine comprising a low-temperature radiator
AssigneeBehr GmbH & Co.
InventorsKlaus Hassdenteufel, Stefan Rogg
Life of this patent
Estimating the term…
Abstract
The invention relates to a cooling circuit of an internal combustion engine of motor vehicles, comprising a main cooling circuit that encompasses a section located upstream of the radiator, a main radiator, a radiator return path, a coolant pump, a main thermostat, and a bypass or short circuit which is disposed between the main thermostat and the coolant pump. Said cooling circuit further comprises a low-temperature circuit encompassing a low-temperature radiator, a low-temperature radiator return path, a valve unit, and an additional heat exchanger.
Claims18
A cooling circuit of an internal combustion engine of a motor vehicle having a main cooling circuit, comprising:
- a main radiator (5a),
- a section (3) located upstream of the radiator,
- a radiator return flow section (8),
- a coolant pump (10),
- a main thermostat (2) and a bypass or short circuit (4) between the main thermostat (2) and the coolant pump (10), and
- a low-temperature circuit, comprising a low-temperature radiator (5b), a low-temperature radiator return flow section (11), a valve unit, and an additional heat exchanger,
- wherein the low-temperature radiator (5b) is connected in parallel with the main radiator (5a);
- wherein the main thermostat (2) is arranged in the section (3) located upstream of the radiator;
- and
- wherein the valve unit is embodied as a mixing thermostat (14) with a first inlet, a second inlet, and one outlet, wherein the first inlet and the outlet are connected into the return flow section (11) of the low-temperature radiator (5b), and the second inlet is connected to the main thermostat (2).
A cooling circuit of an internal combustion engine of a motor vehicle having a main cooling circuit, comprising:
- a main radiator (5a),
- a section (3) located upstream of the radiator,
- a radiator return flow section (8),
- a coolant pump (10),
- a main thermostat (2) and a bypass or short circuit (4) between the main thermostat (2) and the coolant pump (10), and
- a low-temperature circuit, comprising a low-temperature radiator (5b), a low-temperature radiator return flow section (11), a valve unit, and an additional heat exchanger,
- wherein the low-temperature radiator (5b) is connected in parallel with the main radiator (5a);
- wherein the main thermostat (2) is arranged in the section (3) located upstream of the radiator;
- and
- wherein the valve unit is embodied as a warming up thermostat (16) which is connected between the return flow section (11) of the low-temperature radiator (5b) and the bypass or short circuit (4).
A cooling circuit of an internal combustion engine of a motor vehicle having a main cooling circuit, comprising:
- a main radiator (5a),
- a section (3) located upstream of the radiator,
- a radiator return flow section (8),
- a coolant pump (10),
- a main thermostat (2) and a bypass or short circuit (4) between the main thermostat (2) and the coolant pump (10), and
- a low-temperature circuit, comprising a low-temperature radiator (5b), a low-temperature radiator return flow section (11), a valve unit, and an additional heat exchanger,
- wherein the low-temperature radiator (5b) is connected in parallel with the main radiator (5a);
- wherein the main thermostat (2) is arranged in the radiator return flow section (8);
- and
- wherein the valve unit is embodied as a mixing thermostat (4) with a first inlet, a second inlet, and one outlet, wherein the first inlet and the outlet are connected into the return flow section (11) of the low-temperature radiator (5b), and the second input is connected to the section (3) located upstream of the radiator.
A cooling circuit of an internal combustion engine of a motor vehicle having a main cooling circuit, comprising:
- a main radiator (5a),
- a section (3) located upstream of the radiator,
- a radiator return flow section (8),
- a coolant pump (10),
- a main thermostat (2) and a bypass or short circuit (4) between the main thermostat (2) and the coolant pump (10), and
- a low-temperature circuit, comprising a low-temperature radiator (5b), a low-temperature radiator return flow section (11), a valve unit and an additional heat exchanger,
- wherein the low-temperature radiator (5b) is connected in parallel with the main radiator (5a);
- wherein the main thermostat (2) is arranged in the radiator return flow section (8);
- and
- wherein the valve unit is embodied as a warming up thermostat (16) which is connected into the return flow section (11) of the low-temperature radiator (5b).
A coolant radiator of a cooling circuit of an internal combustion engine of a motor vehicle, comprising:
- a pipe/rib block,
- a coolant inlet box (51, 62) with a coolant inlet (53, 63), and
- a collecting box (52, 64) with a coolant connection to the pipe/rib block,
- wherein the pipe/rib block has a main region (50a, 61a) and a low-temperature region (50b, 61b), and coolant outlets for a coolant main flow and a coolant partial flow;
- wherein the main region (50a, 61b) and the low-temperature region (50b, 61b) are connected in parallel;
- and
- wherein a dividing element (54, 66) which divides the pipe/rib block into the main region (50a, 61a) and the low-temperature region (50b, 61b), and divides the collecting box (52, 64) into a main chamber (55, 67) and a secondary chamber (56, 68) is arranged in the collecting box (52, 64).
A coolant radiator of a cooling circuit of an internal combustion engine of a motor vehicle, comprising:
- a pipe/rib block,
- a coolant inlet box (51, 62) with a coolant inlet (53, 63), and
- a collecting box (52, 64) with a coolant connection to the pipe/rib block,
- wherein the pipe/rib block has a main region (50a, 61a) and a low-temperature region (50b, 61b) and coolant outlets for a coolant main flow and a coolant partial flow;
- wherein the main region (50a, 61b) and the low-temperature region (50b, 61a) are connected in parallel;
- and
- wherein a partial stream of coolant, which makes up approximately 4% to 15% of an entire stream of coolant, can flow through the low-temperature region (50b, 61b).
Dependencies are inferred from the claim text.