US 12,228,066 B2
Engine
Yu Hirao, Osaka (JP); and Shinya Matsuo, Osaka (JP)
Assigned to YANMAR HOLDINGS CO., LTD., Osaka (JP)
Filed by Yanmar Holdings Co., Ltd., Osaka (JP)
Filed on Mar. 9, 2023, as Appl. No. 18/119,579.
Claims priority of application No. 2022-036971 (JP), filed on Mar. 10, 2022; application No. 2022-036980 (JP), filed on Mar. 10, 2022; and application No. 2022-036982 (JP), filed on Mar. 10, 2022.
Prior Publication US 2023/0287826 A1, Sep. 14, 2023
Int. Cl. F01P 3/20 (2006.01); F01M 5/00 (2006.01); F01N 13/10 (2010.01); F01P 3/02 (2006.01); F01P 5/10 (2006.01); F01P 7/16 (2006.01); F01P 11/08 (2006.01); F02B 75/22 (2006.01); F01P 3/12 (2006.01)
CPC F01P 3/20 (2013.01) [F01M 5/002 (2013.01); F01N 13/10 (2013.01); F01P 3/02 (2013.01); F01P 5/10 (2013.01); F01P 7/16 (2013.01); F01P 11/08 (2013.01); F02B 75/22 (2013.01); F01P 2003/021 (2013.01); F01P 3/12 (2013.01); F01P 2060/04 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An engine comprising:
a cool liquid cooler configured to cool a first cool liquid, the first cool liquid configured to cool an engine block including a cylinder block and a head block;
a lubricant oil cooler configured to cool a lubricant oil using the first cool liquid or a second cool liquid,
two cylinder rows; and
a gear case placed between the engine block and the cool liquid cooler and/or the lubricant oil cooler, wherein the gear case has a bulkhead;
wherein the cool liquid cooler and the lubricant oil cooler are so placed as to be arranged side by side on one end side in a crankshaft direction;
wherein the cool liquid cooler and/or the lubricant oil cooler is mounted to the gear case,
wherein the gear case has an intra-case cool liquid flow channel through which the first cool liquid is configured to pass,
wherein the intra-case cool liquid flow channel includes a first flow channel placed upstream of the cool liquid cooler and a second flow channel placed downstream of the cool liquid cooler,
wherein the bulkhead partitions the first cool liquid flow channel from the second cool liquid flow channel,
wherein the first cool liquid flow channel provides cooling for one of the two cylinder rows, and the second cool liquid flow channel provides cooling for another of the two cylinder rows.