engine

Abstract

To provide a technique for a V-type engine to suppress the influences of heat from an exhaust passage on the periphery.SOLUTION: The V-type engine as a representative engine having a first bank and a second bank arranged side by side in the horizontal direction includes a first cooling liquid passage and a second cooling liquid passage arranged between the first bank and the second bank and extending in the longitudinal direction, and the exhaust passage arranged extending in the longitudinal direction between the first bank and the second bank and below the first cooling liquid passage and the second cooling liquid passage.SELECTED DRAWING: Figure 6

Claims

1. A V-type engine having a first bank and a second bank arranged in the left-right direction, A first coolant passage and a second coolant passage are arranged between the first bank and the second bank and extend in the front-rear direction, An exhaust passage extending in the front-rear direction between the first bank and the second bank, and positioned below the first coolant passage and the second coolant passage, Equipped with, An engine in which the first bank, the first coolant passage, the exhaust passage, the second coolant passage, and the second bank are arranged in that order from one side to the other in the left-right direction.

2. The engine according to claim 1, wherein the first coolant passage and the second coolant passage are arranged apart from each other in the left-right direction.

3. The engine according to claim 1 or 2, wherein at least one of the first coolant passage and the second coolant passage has a first wall portion extending downward.

4. A V-type engine comprising a first bank and a second bank arranged in the left-right direction, A first coolant passage and a second coolant passage are arranged between the first bank and the second bank and extend in the front-rear direction, An exhaust passage extending in the front-rear direction between the first bank and the second bank, and positioned below the first coolant passage and the second coolant passage, Equipped with, At least one of the first coolant passage and the second coolant passage is A first wall section extending downwards, A second wall portion extending from the lower end of the first wall portion toward the bank closer to the first bank and the second bank, An engine having

5. The exhaust passage includes a first exhaust passage and a second exhaust passage arranged in the left-right direction, The first exhaust passage and the second exhaust passage are configured by connecting a plurality of passage sections with connecting sections. The engine according to claim 1, wherein the first exhaust passage and the second exhaust passage are arranged with a staggered position in the front-rear direction of the connecting portion.

6. The system includes an air intake filter positioned above the first coolant passage, The engine according to claim 1, wherein the intake air filter is positioned so as to overlap with the first coolant passage in a plan view from above, or so as to be positioned on the opposite side of the exhaust passage, with the first coolant passage in between.

7. A V-type engine comprising a first bank and a second bank arranged in the left-right direction, A first coolant passage and a second coolant passage are arranged between the first bank and the second bank and extend in the front-rear direction, An exhaust passage extending in the front-rear direction between the first bank and the second bank, and positioned below the first coolant passage and the second coolant passage, A blow-by gas passage located above the first coolant passage, Equipped with, An engine in which at least a portion of the blow-by gas passage overlaps with the first coolant passage in a plan view from above, or is located on the opposite side of the exhaust passage, with the first coolant passage in between.

8. The engine according to claim 1, further comprising a cover member that covers at least a portion of the first coolant passage, the second coolant passage, and the exhaust passage.

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