Outlet structure of internal combustion engine

A water outlet and internal combustion engine technology, applied in the direction of engine cooling, mechanical equipment, engine components, etc., can solve the problems of cooling water flow pressure loss, water flow turbulence, etc., and achieve the effects of reducing pressure loss, smooth water flow, and suppressing turbulent flow

Active Publication Date: 2015-11-25
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] With regard to the existing water outlet structure, as disclosed in the above-mentioned Patent Document 1, the cylindrical portion leads to the outlet of the radiator in a straight line toward the water outlet, and the bypass channel protrudes in a manner bent at right angles relative to the cylindrical portion. Therefore, with the opening and closing of the bypass channel, the flow of cooling water changes sharply by 90 degrees, causing greater turbulence in the water flow, resulting in a greater pressure loss in the cooling water flow

Method used

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  • Outlet structure of internal combustion engine
  • Outlet structure of internal combustion engine
  • Outlet structure of internal combustion engine

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Embodiment Construction

[0031] Below, based on Figure 1 to Figure 10 One embodiment of the present invention will be described.

[0032] refer to figure 1 , The internal combustion engine 1 of the present embodiment is a 4-stroke water-cooled internal combustion engine with 4 cylinders in-line, and the crankshaft 8 is horizontally mounted on a vehicle so that it points in the left-right direction.

[0033] In this specification, front, rear, left, and right are defined based on the vehicle.

[0034] Such as figure 1 As shown, the engine main body 2 of the internal combustion engine 1 is configured such that the crankshaft 8 is pivotally supported by the lower case 5 so as to sandwich the crankshaft 8, and the lower case 5 is joined to the lower side of the cylinder block 3 in which cylinders are arranged in the left-right direction. A cylinder head 4 is stacked above the cylinder block 3 , a cylinder head cover 6 is covered on the cylinder head 4 , and an oil pan 7 is joined below the lower housi...

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Abstract

A water outlet structure of an internal combustion engine includes a water outlet and a thermostat. The water outlet includes a cooling-water inflow portion, a radiator outflow passage, and a bypass passage. The cooling-water inflow portion is provided to face a cooling-water outlet of a cylinder head. Cooling water is to flow out to a radiator through the radiator outflow passage. The radiator outflow passage linearly extends from the cooling-water inflow portion. The bypass passage linearly and obliquely extends from the cooling-water inflow portion to provide a water flow at an acute angle to a water flow in the radiator outflow passage. The thermostat is provided integrally with the water outlet and includes a thermo housing provided downstream of the bypass passage.

Description

technical field [0001] The invention relates to the structure of a water outlet provided at a cooling water outlet of a cylinder head of a water-cooled internal combustion engine. Background technique [0002] The following water outlet structure has been proposed: the water outlet is provided at the cooling water outlet of the cylinder head of the water-cooled internal combustion engine, a thermostat is integrally assembled to the water outlet, and the water outlet from the cylinder head cooling water flows into the outlet of the water outlet. Cooling water is formed to flow selectively from the thermostat to the radiator or directly to the water pump through the bypass passage. (For example, refer to Patent Document 1). [0003] Patent Document 1: Japanese Patent Application Publication No. 04-006725 [0004] In Patent Document 1, a water outlet portion is attached to a cooling water outlet formed at an end portion of the cylinder head in the cylinder row direction, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01P7/16
CPCF01P3/02F01P7/16F01P2003/028
Inventor 福冈聪服部义弘
Owner HONDA MOTOR CO LTD
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