COOLER ARRANGEMENT FOR COOLING AT LEAST ONE CYLINDER OF A COMBUSTION ENGINE

• US 20160298522A1
• Filed: 12/03/2014
• Published: 10/13/2016
• Est. Priority Date: 12/20/2013
• Status: Active Grant

• Current Assignee: Scania CV AB (Volkswagen AG)
• Original Assignee: Scania CV AB (Volkswagen AG)
• Inventors: KARDOS, Zoltan, JANSSON, Richard, CARLSSON, Magnus, EKMAN, Mats, HILDAHL, Stig
• Granted Patent: US 10,634,037 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F01P 2003/027 Cooling cylinders and cylinder heads in parallel
• CPC Class Codes: F01P 2003/028 Cooling cylinders and cylinder heads in series
• CPC Class Codes: F01P 3/02 Arrangements for cooling cylinders or cylinder heads
• CPC Class Codes: F01P 3/14 for cooling intake or exhaust valves
• CPC Class Codes: F01P 3/16 for cooling fuel injectors or sparking-plugs

Abstract

Disclosed is a cooler arrangement for cooling a cylinder of a combustion engine. The cylinder has a cylinder head and a cylinder liner. The arrangement comprises a cooling circuit with a first flow passage which leads coolant through a lower part of the cylinder head, a second flow passage which leads coolant through an upper part of the cylinder head, and a third flow passage which leads coolant through an upper part of the cylinder liner. The cooling circuit is adapted to initially leading coolant through the first flow passage before it is led in parallel through the second flow passage and the third flow passage.

Claims

1. A cooler arrangement for cooling at least one cylinder of a combustion engine, which cylinder has a cylinder head and a cylinder liner, which arrangement comprises a cooling circuit with a first flow passage which leads coolant through a lower part of the cylinder head, a second flow passage which leads coolant through an upper part of the cylinder head, and a third flow passage which leads coolant through an upper part of the cylinder liner, wherein the cooling circuit is adapted to initially lead a coolant through the first flow passage before it is led in parallel through the second flow passage and the third flow passage.

2. A cooler arrangement according to claim 1, wherein the second flow passage and the third flow passage are so dimensioned as to achieve a larger flow of coolant through the third flow passage than through the second flow passage.

3. A cooler arrangement according to claim 1, further comprising an outlet duct which is situated at a lower level than said flow passages wherein the coolant leaving the second flow passage and the third flow passage is gathered in the outlet duct.

4. A cooler arrangement according to claim 1, wherein the arrangement comprises a fourth flow passage which leads a cooling medium through a lower part of the cylinder liner.

5. A cooler arrangement according to claim 4, wherein the coolant leaving the first flow passage is also led in parallel to the fourth flow passage.

6. A cooler arrangement according to claim 4, wherein the arrangement comprises a separate cooling circuit which leads a cooling medium through the fourth flow passage.

7. A cooler arrangement according to claim 1, wherein said first flow passage comprises cooling ducts which carry a parallel flow of coolant through the lower part of the cylinder head.

8. A cooler arrangement according to claim 1, wherein said first flow passage comprises cooling ducts which provide a coolant flow close to all of the inlet ducts and exhaust ducts in the cylinder head.

9. A cooler arrangement according to claim 1, wherein said first flow passage comprises cooling ducts which provide a coolant flow close to an injector in the cylinder head.

10. A cooler arrangement according to claim 1, wherein the first flow passage comprises at least one vertical duct which leads coolant in a vertical direction close to an the injector in the cylinder head.