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Direct jet type diesel engine

A jet type, diesel engine technology, applied in mechanical equipment, engine ignition, engine components, etc., can solve the problem of easy overheating of spark plugs, and achieve the effect of suppressing overheating and high filling efficiency

Inactive Publication Date: 2007-04-18
KUBOTA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art described above, since the heat of the exhaust gas passing through the exhaust hole is easily transferred to the spark plug, the spark plug is prone to overheating.

Method used

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  • Direct jet type diesel engine
  • Direct jet type diesel engine
  • Direct jet type diesel engine

Examples

Experimental program
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Embodiment Construction

[0037] Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 are diagrams for explaining an embodiment of the present invention. In this embodiment, a vertical overhead valve type multi-cylinder diesel engine is described.

[0038] The configuration of this engine is as follows.

[0039] As shown in FIG. 1 , the cylinder head 1 is mounted on the top of the cylinder block 49 , and the cylinder front cover 15 is mounted on the top thereof. A fuel injector 2 and a spark plug 3 are attached to a cylinder head 1 .

[0040] The installation configuration of the fuel nozzle 2 and the spark plug 3 is as follows.

[0041] As shown in Figure 1, the front end of the fuel nozzle 2 faces the central part 4 of the cylinder, and the intake hole wall portion 6 between the fuel nozzle 2 and the intake hole 5 penetrates the spark plug 3, so that the spark plug 3 is tilted relative to the fuel nozzle 2. Angle (θ1), insert the front end into the cy...

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PUM

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Abstract

A direct-injection type diesel engine comprises a cylinder head 1 with a fuel injection nozzle 2 and a glow plug 3 attached thereto. The fuel injection nozzle 2 has a leading end opposed to a cylinder mid portion 4 and the glow plug 3 extends through an intake port wall portion 6 between the fuel injection nozzle 2 and an intake port 5. The glow plug 3 is inclined with respect to the fuel injection nozzle 2 by a predetermined angle (theta1) and has a leading end inserted into the cylinder mid portion 4.

Description

technical field [0001] The present invention relates to a direct injection diesel engine, in particular, to a diesel engine capable of preventing spark plug from overheating. Background technique [0002] Conventionally, as a direct-injection diesel engine, there has been a diesel engine in which a fuel nozzle and a spark plug are mounted on a cylinder head as in the present invention. [0003] However, in this diesel engine of the prior art, the spark plug is penetrated to the wall portion of the exhaust hole. [0004] In the prior art described above, since the heat of the exhaust gas passing through the exhaust hole is easily transferred to the spark plug, the spark plug is prone to overheating. Contents of the invention [0005] An object of the present invention is to provide a direct injection diesel engine capable of solving the above-mentioned problems. [0006] The contents of the present invention are as follows. [0007] As shown in Figure 1, a direct-injecti...

Claims

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Application Information

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IPC IPC(8): F02P13/00F02P19/00F01P3/02F01P3/16F02B3/06F02B19/14F02B23/00F02B23/06F02B31/00F02F1/24F02F1/36
CPCY02T10/146Y02T10/125F02B23/0672Y02T10/123F02F1/242F02B31/00F02B2275/14F02B2031/006F02B3/06Y02T10/12F02B19/14
Inventor 白石安则明田正宽岩永渉梅田裕三
Owner KUBOTA LTD