Internal combustion engine

Patent metadata

Field	Value
Publication number	US-10619558-B2
Application number	US-201715837509-A
Country	US
Kind code	B2
Filing date	Dec 11, 2017
Priority date	Dec 15, 2016
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

An internal combustion engine, especially a diesel internal combustion engine, having at least one intercooler, at least one control unit, at least a first and a second cooling circuit, whereby the cooler of the first cooling circuit is flow-connected to a cooling circuit of the internal combustion engine, while the cooler of the second cooling circuit of the internal combustion engine is flow-connected to the intercooler.

First claim

What is claimed is:

1. An arrangement for an internal combustion engine comprising:
at least one intercooler;
at least one control unit;
a first and a second cooling circuit, a first cooler of the first cooling circuit being configured for delivering coolant via the first cooling circuit to the internal combustion engine, while a second cooler of the second cooling circuit is configured for delivering coolant via the second cooling circuit to the at least one intercooler;
an active crankcase ventilation system operatively connected to at least one Venturi tube, wherein the at least one Venturi tube is designed as an ejector pump connected between the active crankcase ventilation system and the at least one intercooler; and
a valve cover, wherein the at least one intercooler, the at least one control unit, and the active crankcase ventilation system are fixed directly on top of the valve cover.

2. The arrangement according to claim 1 , wherein the at least one control unit is arranged near the at least one intercooler in such a way that the at least one control unit can be cooled by the second cooling circuit, the at least one control unit configured for requesting at least one coolant pump to pump coolant through the second cooler.

3. The arrangement according to claim 1 , wherein the second cooling circuit is fluidly coupled to at least one coolant pump.

4. The arrangement according to claim 1 , further comprising at least one coolant pump arranged on top of the valve cover.

5. The arrangement according to claim 4 , wherein the active crankcase ventilation system is positioned directly beside the at least one intercooler.

6. The arrangement according to in claim 1 , wherein the first and the second cooling circuits are flow-connected by at least one mixing valve in such a way that the at least one intercooler can be heated up by coolant of the first cooling circuit.

7. The arrangement according to claim 1 , wherein an area above the valve cover is covered with a bionic hood.

8. The arrangement according to in claim 7 , wherein the bionic hood has an internal structure comprised of an irregular ribbing.

9. The arrangement according to claim 1 , wherein the internal combustion engine is a diesel internal combustion engine.

10. The arrangement according to claim 2 , wherein the at least one control unit is positioned directly beside the at least one intercooler.

11. The arrangement according to claim 1 , further comprising a turbocharger, the at least one intercooler being arranged with respect to the turbocharger such that uncooled air from the turbocharger enters the at least one intercooler directly.

12. The arrangement according to claim 1 , wherein the active crankcase ventilation system is positioned directly beside the at least one intercooler.

13. The arrangement according to claim 5 , wherein the at least one Venturi tube is configured to use a boost pressure of the at least one intercooler in order to generate a negative pressure in the active crankcase ventilation system wherein.

14. The arrangement according to claim 7 , wherein each of the at least one control unit, the at least one intercooler, and the active crankcase ventilation system are completely covered by the bionic hood.

15. A vehicle cooling system for an internal combustion engine comprising:
at least one intercooler;
at least one control unit;
a first and a second cooling circuit, a first cooler of the first cooling circuit being configured for delivering coolant via the first cooling circuit to the internal combustion engine, while a second cooler of the second cooling circuit is configured for delivering coolant via the second cooling circuit to the at least one intercooler;
an active crankcase ventilation system operatively connected to at least one Venturi tube, wherein the at least one Venturi tube is designed as an ejector pump connected between the active crankcase ventilation system and the at least one intercooler; and
a valve cover, wherein the at least one intercooler, the at least one control unit, and the active crankcase ventilation system are fixed directly on top of the valve cover.

16. The arrangement according to claim 1 , wherein the at least one intercooler is a water-air intercooler.

17. The arrangement according to claim 1 , wherein uncooled air from a turbocharger enters the at least one intercooler directly on a first side of the at least one intercooler, and cooled air exits from a second side of the at least one intercooler opposite the first side at a cold charge air path upstream from at least one inlet valve of the internal combustion engine.

18. An internal combustion engine comprising:
at least one intercooler;
at least one control unit;
a first and a second cooling circuit, a first cooler of the first cooling circuit being configured for delivering coolant via the first cooling circuit to the internal combustion engine, while a second cooler of the second cooling circuit is configured for delivering coolant via the second cooling circuit to the at least one intercooler;
an active crankcase ventilation system operatively connected to at least one Venturi tube, wherein the at least one Venturi tube is designed as an ejector pump connected between the active crankcase ventilation system and the at least one intercooler; and
a valve cover, wherein the at least one intercooler, the at least one control unit, and the active crankcase ventilation system are fixed directly on top of the valve cover.

19. The arrangement according to claim 4 , wherein the active crankcase ventilation system is positioned between the at least one coolant pump and the at least one Venturi tube.

20. The arrangement according to claim 4 , further comprising a sound-absorbing hood, each of the at least one intercooler, the at least one coolant pump, the at least one control unit, and the at least one Venturi tube being completely covered by the sound-absorbing hood.

Assignees

• Deutz Ag

Inventors

• Joisten-Pieritz Joachim
• Schwabauer Paul

Classifications

• F01P3/20 Primary

  Cooling circuits not specific to a single part of engine or machine (F01P3/22 takes precedence) · CPC title

• F02B29/0437

  Liquid cooled heat exchangers · CPC title

• F02M25/06

  adding lubricant vapours · CPC title

• F02F7/006

  Camshaft or pushrod housings · CPC title

• F01P7/164

  by varying pump speed · CPC title