초록 ▼

Coolant circuit, in particular a coolant circuit having a plurality of sub-circuits 1, 2, 3 of an internal combustion engine 11 includes a primary cooling circuit 1 and a heating circuit 2 as well as a coolant delivery pump 5 disposed on a rotary actuator 4, with the rotary actuator 4 having a rotar

Coolant circuit, in particular a coolant circuit having a plurality of sub-circuits 1, 2, 3 of an internal combustion engine 11 includes a primary cooling circuit 1 and a heating circuit 2 as well as a coolant delivery pump 5 disposed on a rotary actuator 4, with the rotary actuator 4 having a rotary-slide housing 20 with several ports 8a, 8b, 9a, 9b, 10a through which coolant can flow, and a first and at least one second rotary slide 6 and 7 which are rotatably supported in the rotary-slide housing 20 and have each at least one rotary-slide pass-through opening 8, 9, 10 forming a flow path, wherein the ports 8a, 8b, 9a, 9b, 10a can be brought into at least partial coincidence with the rotary-slide pass-through openings 8, 9, 10 by a rotary motion of the respective rotary slide 6 and/or 7), wherein a first branch 1a of the primary cooling circuit 1 leads from the internal combustion engine 11 via a main radiator 12 to a main radiator port 8b of the first rotary slide and can be controlled by the first rotary slide 6, and that a second branch 1b of the primary cooling circuit 1 leads from an outlet 21 of the coolant delivery pump 5 to the internal combustion engine 11 and can be controlled by the second rotary slide 7.

대표청구항 ▼

1. A coolant circuit of an internal combustion engine, comprising: a primary cooling circuit having a first branch leading from the internal combustion engine, and a second branch leading to the internal combustion engine;a main radiator disposed in the first branch;a rotary actuator; anda coolant d

1. A coolant circuit of an internal combustion engine, comprising: a primary cooling circuit having a first branch leading from the internal combustion engine, and a second branch leading to the internal combustion engine;a main radiator disposed in the first branch;a rotary actuator; anda coolant delivery pump disposed on the rotary actuator and having an outlet fluidly connectable to the internal combustion engine via the second branch,said rotary actuator including: a rotary-slide housing,a first rotary slide having at least one rotary-slide pass-through opening and being supported in the rotary-slide housing for rotation to allow at least partial coincidence of the at least one rotary-slide pass-through opening with a main radiator port of the rotary-slide housing to thereby control a flow of coolant through the first branch from the internal combustion engine via the main radiator to the at least one rotary-slide pass-through opening of the first rotary valve; anda second rotary slide having at least one rotary-slide pass-through opening and being supported in the rotary-slide housing for rotation to allow at least partial coincidence with a further port of the rotary-slide housing to thereby control a flow of coolant through to the second branch from the outlet of the coolant delivery pump to the internal combustion engine. 2. The coolant circuit of claim 1, further comprising a heating circuit branching upstream of the second rotary slide from the second branch of the primary cooling circuit and routing coolant to the internal combustion engine via a heating heat exchanger disposed in the heating circuit. 3. The coolant circuit of claim 2, further comprising a heater delivery pump arranged in the heating circuit to circulate coolant during an afterrun mode of operation. 4. The coolant circuit of claim 3, further comprising a shut-off valve arranged in the heating circuit and being open during the afterrun mode of operation. 5. The coolant circuit of claim 4, wherein the shut-off valve is arranged upstream of the heater delivery pump. 6. The coolant circuit of claim 1, further comprising a bypass branching from the first branch of the primary cooling circuit downstream of the internal combustion engine to a bypass port of the rotary-slide housing, said first rotary slide controlling a flow of coolant through the bypass through rotation of the first rotary slide and at least partial coincidence of at least one rotary-slide pass-through opening of the first rotary slide with the bypass port. 7. The coolant circuit of claim 6, wherein the first rotary slide opens the bypass between a first threshold value of a coolant temperature and a second threshold value of a coolant temperature, and wherein the second rotary slide opens and closes the second branch of the primary cooling circuit in intervals. 8. The coolant circuit of claim 6, further comprising an oil cooler circuit routing coolant from the internal combustion engine via an oil cooler disposed in the oil cooler circuit to an oil cooler port of the rotary-slide housing, said first rotary slide controlling a flow of coolant through the oil cooler circuit, wherein the first rotary slide opens the bypass and the oil cooler circuit between a second threshold value of a coolant temperature and a third threshold value of the coolant temperature, and wherein the second rotary slide opens the second branch of the primary cooling circuit. 9. The coolant circuit of claim 6, further comprising an oil cooler circuit routing coolant from the internal combustion engine via an oil cooler disposed in the oil cooler circuit to an oil cooler port of the rotary-slide housing, said first rotary slide controlling a flow of coolant through the oil cooler circuit, wherein the first rotary slide opens between a third threshold value of a coolant temperature and a limit value of the coolant temperature the oil cooler circuit and opens and closes in intervals the first branch of the primary cooling circuit and the bypass to reach a target value of the coolant temperature, and wherein the second rotary slide opens the second branch of the primary cooling circuit. 10. The coolant circuit of claim 6, wherein first rotary slide opens during afterrun mode of operation after shutting down the internal combustion engine the first branch of the primary cooling circuit and closes the bypass, and wherein the second rotary slide closes the second branch of the primary cooling circuit. 11. The coolant circuit of claim 1, further comprising an oil cooler circuit routing coolant from the internal combustion engine via an oil cooler disposed in the oil cooler circuit to an oil cooler port of the rotary-slide housing, said first rotary slide controlling a flow of coolant through the oil cooler circuit through rotation of the first rotary slide and at least partial coincidence of at least one rotary-slide pass-through opening of the first rotary slide with the oil cooler port. 12. The coolant circuit of claim 1, wherein the second rotary slide closes the second branch of the primary cooling circuit at least in one of the phases selected from the group consisting of after starting the internal combustion engine, and below a first threshold value of a coolant temperature. 13. The coolant circuit of claim 1, further comprising a temperature measuring gauge to determine a coolant temperature in the first branch downstream of the internal combustion engine. 14. The coolant circuit of claim 1, wherein the first rotary slide is arranged in coaxial relationship to a suction port of the coolant delivery pump, and wherein the second rotary slide is arranged in axis-parallel relationship to the suction port of the coolant delivery pump. 15. The coolant circuit of claim 1, further comprising a servo drive to operate the first rotary slide, wherein the second rotary slide is operatively connected with the first rotary drive via at least one angle range, with the second rotary slide being operated by the first rotary slide. 16. The coolant circuit of claim 15, wherein the angle range is limited by stops which the second rotary slide impacts in the absence of an operative connection of the second rotary slide with the first rotary slide.