CN2497067Y

CN2497067Y - Direct-injection diesel engine

Info

Publication number: CN2497067Y
Application number: CN01247472U
Authority: CN
Inventors: 杨育军; 彭劲松; 任燕平
Original assignee: Kunming Yunnei Power Co Ltd
Current assignee: Kunming Yunnei Power Co Ltd
Priority date: 2001-08-29
Filing date: 2001-08-29
Publication date: 2002-06-26
Anticipated expiration: 2011-08-29

Abstract

The utility model relates to an anomalous direct injection diesel engine, and can better solve the problem of the economy performance, as well as the reliability of the diesel engine. The utility model is mainly characterized in that an air inlet passage (2) is connected on the cylinder cover (1), and a W-shaped firebox (3) with a retracted mouth is arranged on the top face of a piston (4). The diesel engine composed of optimized combination has full and complete combustion, low oil consumption and reduced gas discharge. The optimized combination can be applied to the diesel engine with the cylinder diameter of 95-110mm.

Description

Direct injection diesel engine

One, technical field

The utility model relates to a kind of diesel engine, is a kind of direct injection diesel engine.

Two, background technique

Diesel engine is done as a whole after invention creates, go through century-oldly, innovate again, as if just do not occurred as big, revolutionary technology, but to be not the technological innovation of the sector just stopped for this, because, reduce toxic emission round reducing fuel consume, improve the Economy of motor, the technological innovation of reliability or the like aspect was not all broken always, as the motor of ECI electronic control injection fuel oil, was exactly good example.

At present, patent in China's application technology relevant with diesel engine is a lot, as announcing on April 7th, 1999, notification number CN1213040A, name is called the patent application of " manufacture method of combustion engine cylinder head ", on June 18th, 1997 was announced, and notification number is CN1152071A, and name is called the patent application of " direct injection chamber of diesel engine " or the like; But above-mentioned application is to pay attention to local improvement and innovation more, diesel engine is made as a whole solution consider seldom, and is not enough, so be difficult to estimate its quality.

Industry development is target with economic benefits, diesel engine is as a kind of human work, the article that life is used, the target directing of its technological innovation is a target to obtain better Economy also, the purpose of this utility model just provides a kind of overall plan that solves the diesel engine Economy, by the air inlet to most critical, the well-mixed best of breed in firing chamber is considered, creates a kind of direct injection diesel engine.

Three, summary of the invention and beneficial effect

The direct injection diesel engine that the utility model relates to, by cylinder body, cylinder head, piston, the firing chamber, oil sprayer, connecting rod, distribution device, fuel supply mechanism, compositions such as lubricating structure, scheme are such: connecting intake duct 2 on the cylinder head 1, be provided with reducing w-type combustion chamber 3 on the end face of piston 4; Wherein, intake duct 2 is the spiral vortex air flue, the size (D advances) of import center to cylinder head bottom surface is 53 millimeters, outlet diameter (D goes out) is 40 millimeters, its inlet end face is square;

The position of reducing w-type combustion chamber 3, the distance of its center and cylinder axis is 0～4 millimeter of an axial dimension, 4～8 millimeters of radial dimensions, the angle β at center, firing chamber is that 150～170 degree, angle γ are 100～120 degree, end face fillet radius (R1) is 9～11 millimeters, and bottom surface fillet radius (R2) is 5～7 millimeters, dark (H) 15～17.5 millimeters in firing chamber, opening diameter φ is 50～70 millimeters, and bottom radius (R3) is 31～33.5 millimeters.

The cylinder bore of this abnormity direct injection diesel engine is 95～110 millimeters.

Other textural association of this motor is the same with the structure of existing diesel engine, be not described specifically.

Obviously, the technology contents emphasis of this direct injection diesel engine is in the improvement and composite structure thereof of the tissue of air inlet, firing chamber, and with the diesel engine that this combination obtains, its beneficial effect is:

(1), can organize preferably that air and fuel oil mix, make sufficient combustion, improve air utilization ratio, reduce oil consumption, reduce discharging, thereby improved the Economy and the feature of environmental protection of this machine;

(2), this combination derives from the theoretical calculation design of science and tests accurately and high-quality processing and assembling;

(3) its air inlet index: flow coefficient and swirl rate can reach the number range of following chart;

Four, description of drawings

Fig. 1 is an agent structure schematic representation of the present utility model;

Fig. 2 is the intake duct plan view;

Fig. 3 is the piston head plan view;

Fig. 4 is the schematic representation of A-A section firing chamber among Fig. 3;

Five, embodiment

The direct injection diesel engine that the utility model relates to, by cylinder body, cylinder head, piston, the firing chamber, oil sprayer, connecting rod, distribution device, fuel supply mechanism, compositions such as lubricating structure, concrete preferably scheme is such: connecting intake duct 2 on the cylinder head 1, be provided with reducing w-type combustion chamber 3 on the end face of piston 4;

Wherein, intake duct 2 is the spiral vortex air flue, the size of import center to bottom surface (D advances) is 53 millimeters, outlet diameter (D goes out) is 40 millimeters, its inlet end face be square, be of a size of 52 * 45 millimeters;

The position of reducing w-type combustion chamber 3, the distance of its center and cylinder axis is 2 millimeters of axial dimensions, 6 millimeters of radial dimensions, the angle β at center, firing chamber is that 160 degree, angle γ are 110 degree, end face fillet radius (R1) is 10 millimeters, and bottom surface fillet radius (R2) is 6 millimeters, and firing chamber dark (H) is 16 millimeters, opening diameter φ is 60 millimeters, and bottom radius (R3) is 32 millimeters.

The cylinder bore of this direct injection diesel engine is 100 millimeters.Other structure is identical with the structure of existing diesel engine.

Claims

1, a kind of direct injection diesel engine, by cylinder body, cylinder head, piston, the firing chamber, oil sprayer, connecting rod, distribution device, fuel supply mechanism, compositions such as lubricating structure is characterized in that: connecting intake duct (2) on the cylinder head (1), be provided with reducing w-type combustion chamber (3) on the end face of piston (4);

Wherein, intake duct (2) is the spiral vortex air flue, the size (D advances) of import center to cylinder head bottom surface is 53 millimeters, outlet diameter (D goes out) is 40 millimeters, its inlet end face is square;

The position of reducing w-type combustion chamber (3), the distance of its center and cylinder axis is 0～4 millimeter of an axial dimension, 4～8 millimeters of radial dimensions, the angle β at center, firing chamber is that 150～170 degree, angle γ are 100～120 degree, end face fillet radius (R1) is 9～11 millimeters, and bottom surface fillet radius (R2) is 5～7 millimeters, dark (H) 15～17.5 millimeters in firing chamber, opening diameter φ is 50～70 millimeters, and bottom radius (R3) is 31～33.5 millimeters.

2, direct injection diesel engine according to claim 1 is characterized in that: the cylinder bore of this motor is of a size of 95～110 millimeters.