CN2830661Y - Combustion chamber of diesel engine - Google Patents

Abstract

The utility model relates to diesel engine components, which are particularly suitable for a combustion chamber of a diesel engine with a cylinder diameter of phi 95 and a travel range of 98 millimeters. The combustion chamber is provided with an octagonal opening which is formed by alternate connection and surround of four isometric long edges and four isometric short edges; separation distance A of the long edges is 45 to 50 millimeters; separation distance B of the short edges is 50 to 55 millimeters; depth C of the combustion chamber is 15 to 17 millimeters; height D of a squeezing flow boss is 6 to 9 millimeters; a transitional circular arc radius E of the top of the boss is 1.5 to 2.5 millimeters; a knuckle radius F of an edge line is 2 to 4 millimeters; a cone angle G of the boss is 100 DEG to 120 DEG, and a radius H of a bottom round angle is 4 to 6.5 millimeters. The utility model can suppress excessive air agitation in the combustion chamber under a high-speed operating condition; the utility model can simultaneously control depth and distribution of level points of oil lines and can improve mixing quality of oil gases, and the utility model can increase power performance, economy and emission performance of a complete engine.

Description

Burning chamber of diesel engine

Affiliated technical field

The utility model relates to a kind of diesel engine part, especially a kind of cylinder diameter Φ 95 that is applicable to, the firing chamber of stroke 98mm diesel engine.

Background technique

Be subjected to the restriction of self structure, small-bore diesel engine oil line penetration distance is little, needs strong intake swirl to cooperate with it, but, when high-speed case, can cause in the firing chamber air inlet disturbance excessive, influence oil gas and mix, and then influence technical orders such as complete machine power character, Economy, emission performance.

Summary of the invention

In order to overcome the deficiencies in the prior art, a kind of burning chamber of diesel engine of the utility model, too high air agitation in firing chamber when purpose is to suppress high-speed working condition can be controlled the oily line drop point degree of depth, distribution simultaneously, improve the oil gas mixing quality, improve complete machine power character, Economy, emission performance.

The technological scheme that its technical problem that solves the utility model adopts is: the firing chamber has four isometric long limits and alternately is connected the octagon opening that surrounds with four minor faces, long limit spacing A is 45～50mm, minor face spacing B is 50～55mm, combustion-chamber depth C is 15～17mm, squeezing stream boss height D is 6～9mm, and boss top transition arc radius E is 1.5～2.5mm, and sideline transition angular radius F is 2～4mm, boss cone angle G is 100 °～120 °, and bottom fillet radius H is 4～6.5mm.

In order to make diesel engine reach best binding site in indexs such as power character, Economy, smoke intensities, particularly: described long limit spacing A is 48.8mm, minor face spacing B is 53.95mm, combustion-chamber depth C is 16mm, squeezing stream boss height D is 7.8mm, and boss top transition arc radius E is 2mm, and sideline knuckle radius F is 3mm, boss cone angle G is 110 °, and bottom fillet radius H is 5mm.

Advantage of the present utility model is:

1. strong excessively air agitation in the firing chamber when suppressing high-speed working condition, simultaneously middle boss produce certain stream that squeezes, and improve air agitation intensity in the firing chamber;

2. control the oily line drop point degree of depth, distribution, improve the oil gas mixing quality;

3. processing technology is simple, does not need to carry out machining.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is a sectional view of the present utility model.

Among the figure: the long limit spacing B minor face spacing C combustion-chamber depth D of A squeezes stream boss height E boss top transition arc radius F line knuckle radius G boss cone angle H bottom fillet radius

Embodiment

The utility model is further described below in conjunction with accompanying drawing.

A kind of burning chamber of diesel engine as shown in Figure 1 is applicable to cylinder diameter Φ 95, the diesel engine of stroke 98mm.Its each structure specifically is of a size of: the firing chamber has four isometric long limits and alternately is connected the octagon opening that surrounds with four minor faces, long limit spacing A is 48.8mm, minor face spacing B is 53.95mm, combustion-chamber depth C is 16mm, boss cone angle G is 110 °, and boss top transition arc radius E is 2mm, and sideline knuckle radius F is 3mm, squeezing stream boss height D is 7.8mm, and bottom fillet radius H is 5mm.

Claims (2)

1. burning chamber of diesel engine, it is characterized in that: described firing chamber has four isometric long limits and alternately is connected the octagon opening that surrounds with four minor faces, long limit spacing A is 45～50mm, minor face spacing B is 50～55mm, and combustion-chamber depth C is 15～17mm, and squeezing stream boss height D is 6～9mm, boss top transition arc radius E is 1.5～2.5mm, sideline transition angular radius F is 2～4mm, and boss cone angle G is 100 °～120 °, and bottom fillet radius H is 4～6.5mm.

2. burning chamber of diesel engine according to claim 1, it is characterized in that: described long limit spacing A is 48.8mm, minor face spacing B is 53.95mm, combustion-chamber depth C is 16mm, boss cone angle G is 110 °, and boss top transition arc radius E is 2mm, and sideline knuckle radius F is 3mm, squeezing stream boss height D is 7.8mm, and bottom fillet radius H is 5mm.

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