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Helical air intake channel of single-cylinder direct-injection diesel engine

A spiral air intake and direct injection technology, applied in the field of diesel engine parts, can solve the problems of reducing intake flow, increasing intake resistance, and not easy to high vortex, so as to achieve the effect of reducing intake flow

Inactive Publication Date: 2006-12-13
JIANGSU CHANGFA GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The higher intake vortex capacity has a favorable impact on the power and economy of the whole machine. For small-bore diesel engines, the layout of the intake port is limited by the structural size of the cylinder head itself, and it is not easy to achieve high vortex. my country's small The speed of single-cylinder diesel engines is mostly lower than 3000 rpm. In general, the method of adding a "diversion wall" is adopted to force the airflow to enter the cylinder along the expected diversion direction, thereby generating high vortex. However, using this method will cause Reduce the intake air flow and increase the intake resistance, which is very unfavorable for an engine that requires oxygen-rich combustion to do work

Method used

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  • Helical air intake channel of single-cylinder direct-injection diesel engine
  • Helical air intake channel of single-cylinder direct-injection diesel engine

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with accompanying drawing.

[0031] Such as figure 1 As shown in Figure 3, the spiral inlet of a single-cylinder direct-injection diesel engine is composed of the air inlet 1, the spiral chamber 2 and the spiral chamber outlet 3, and the abscissa from the center of the spiral chamber outlet 3 to the center line of the cylinder The distance A of x=18~20mm, the distance B=4~6mm from the center of the outlet 3 of the spiral chamber to the vertical coordinate y of the cylinder center line; the central axes of the airway inlet 1 and the outlet 3 of the spiral chamber are perpendicular to each other, and the vertical distance M=35~37mm , the vertical distance L between the inlet plane of the airway inlet 1 and the central axis of the spiral chamber outlet 3 is 83-86mm. The spiral chamber 2 is composed of tangent multi-section three-dimensional arcs R1, R2, R3, R4, R5, R6, R7, R8, R9, R1=1.5-2.5mm, R2=17-20m...

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Abstract

The invention relates to a screw air inlet channel of single cylinder jet diesel engine whose cylinder diameter is 75-80mm. wherein, the invention is arranged inside the cylinder; the inlet channel is formed by inlet of air channel, screw room and the outlet of screw room; the screw room is formed by several sections of solid arcs which are tangent. The invention can generate high-vortex rate to meet the demand of jet diesel engine, without reduced air inlet and increased inlet resistance.

Description

technical field [0001] The invention relates to a diesel engine part, in particular to a spiral air inlet suitable for a single-cylinder direct-injection diesel engine with a cylinder diameter of 75-80mm. Background technique [0002] The power and economy of the direct injection diesel engine are greatly affected by the quality of the intake air, while the intake air of the diesel engine comes entirely from the intake port arranged in the cylinder head. The higher intake vortex capacity has a favorable impact on the power and economy of the whole machine. For small-bore diesel engines, the layout of the intake port is limited by the structural size of the cylinder head itself, and it is not easy to achieve high vortex. my country's small The speed of single-cylinder diesel engines is mostly lower than 3000 rpm. In general, the method of adding a "diversion wall" is adopted to force the airflow to enter the cylinder along the expected diversion direction, thereby generating h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B31/04F02F1/42
CPCY02T10/146Y02T10/12
Inventor 赵新友赵亚军杨洋张红升邵国华
Owner JIANGSU CHANGFA GRP
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