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Multi-cylinder diesel engine

A diesel engine, multi-cylinder technology, applied in the direction of engine components, combustion engines, engine cooling, etc., can solve problems such as rise, common rail heat dissipation reduction, common rail heat damage fuel temperature, etc., to achieve the suppression of fuel temperature rise and heat dissipation Improves performance and suppresses heat damage

Active Publication Date: 2011-04-20
KUBOTA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007]Because the suction inlet of the suction manifold is arranged in front of the common rail, the engine cooling air from the engine cooling fan is blocked at the suction inlet and cannot Blowing onto the common rail reduces the heat dissipation of the common rail and easily causes thermal damage to the common rail and a rise in fuel temperature

Method used

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  • Multi-cylinder diesel engine
  • Multi-cylinder diesel engine
  • Multi-cylinder diesel engine

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no. 1 approach

[0070] Such as image 3 As shown, with regard to the engine, a cylinder head 33 is assembled on the top of the cylinder block 7, a cylinder head cover 5 is assembled on the top of the cylinder head 33, an oil pan 40 is assembled on the bottom of the cylinder block 7, and an oil pan 40 is assembled on the bottom of the cylinder block 7. The gear box 21 is assembled in the part. Such as Figure 4 As shown, there is a flywheel housing 41 at the rear of the cylinder block 7 , and a flywheel 42 assembled on the crankshaft 1 is accommodated in the flywheel housing 41 .

[0071] Such as image 3 As shown, when viewed from the front of the engine, the intake manifold 2 is assembled on the left side of the cylinder head 33 , and the exhaust manifold 43 is assembled on the right side of the cylinder head 33 . A supercharger 44 is attached to an upper portion of the exhaust manifold 43 , and the intake air inlet portion 6 of the intake manifold 2 is supercharged from the supercharger ...

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Abstract

It is an object of the invention to provide a multi-cylinder diesel engine in which a thermal damage of a common rail, and a rise in fuel temperature can be suppressed. In order to achieve the object, a multi-cylinder diesel engine in which, while the extension direction of a crank shaft 1 is set to the anteroposterior direction, a common rail 3 which is directed in the anteroposterior direction is placed above an intake manifold 2, and an engine cooling fan 4 is placed in front of the engine is configured so that the width direction of the engine which is perpendicular to the anteroposterior direction is set to the lateral direction, an air intake portion 6 of the intake manifold 2 is placed on the outer lateral side of the both lateral sides of the common rail 3, the outer lateral side being opposite to a head cover 5, and the common rail 3 is placed in a place to which engine cooling air produced by the engine cooling fan 4 is blown.

Description

technical field [0001] The present invention relates to a multi-cylinder diesel engine, and relates in detail to a multi-cylinder diesel engine capable of suppressing common rail thermal damage and fuel temperature rise. Background technique [0002] Conventionally, a multi-cylinder diesel engine has a structure in which a common rail facing the front-rear direction is arranged above the intake manifold, and an engine cooling fan is arranged on the front side of the engine with the crankshaft mounting direction as the front-rear direction (see Patent Literature 1). [0003] According to such an engine, there is an advantage that the heat of the cylinder head and the cylinder block hardly enters the common rail, and the common rail can be air-cooled by the engine cooling air from the engine cooling fan. [0004] However, in this prior art, there is a problem because the intake inlet of the intake manifold is arranged in front of the common rail. [0005] Patent Document 1: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M55/02F01P5/02F02M39/00
CPCF02M35/112F02M35/10222F02M35/10111F02M35/10216F02M35/10268F02M35/10144F02M39/005F01P1/06F02B3/06F02F7/0068F02F7/007F02M63/02F02M31/20F02M2200/03Y02T10/12F02M55/02
Inventor 吉井理甲斐昭彦尾曾洋树竹村裕二久野完喜多健太郎长谷川丈也宫内涉
Owner KUBOTA LTD
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