CN2240203Y

CN2240203Y - Discharge sparking-plug

Info

Publication number: CN2240203Y
Application number: CN 94208316
Authority: CN
Inventors: 张志东
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-04-19
Filing date: 1994-04-19
Publication date: 1996-11-13
Anticipated expiration: 2004-04-19

Abstract

The utility model relates to an igniting device for an engine. The igniting device for an engine is designed according to a point discharge principle. The igniting device for an engine can lead the current intensity of discharge spark to be fixed-point and fixed-position. The work efficiency of the complete machine of the engine is enhanced. The utility model is characterized in that the igniting head of an inner electrode adopts a pointed end structure; the electrode of the front sleeve of the connecting body of an outer electrode adopts a hemisphere surface structure, which obtains the design requirement of the point discharge principle; the structures of the connecting bodies of the inner electrode and the outer electrode are rebuilt into the front sleeve of the connecting body of the outer electrode and the back seat of the connecting body of the outer electrode, which increases the clearance adjustment and conveniently clears carbon deposit and rich oil. The clearance adjustment is completed by the thickness of a standard spacer. The method for installation and energization is the same as a general spark plug.

Description

The discharge type spark plug

The utility model relates to a kind of engine ignitor, is to import the discharge generation spark by sparking-plug electrode, and air and gasoline mixture body in the ignition engine cylinder, thus reach the engine work done.

At present, known spark plug structure is that, hollow pad conjuncted by, interior electrode, internal and external electrode ceramics insulator, external electrode, conducting ring are formed; In case produce carbon deposit and rich oil, will make the internal and external electrode short circuit; Because what internal and external electrode adopted is conjuncted structure, the removing of carbon deposit and rich oil is made troubles, in case carbon deposit and rich oil are serious, have only with changing new product; Also because inside and outside electrode tip is a biplane construction, and its structure does not meet the point discharge principle design, essence is the actual initial firing current intensity that offers, and does not give full play to efficient on the inside and outside electrode tip of spark plug; Its discharging gap adjustment is finished by the dispatch from foreign news agency cartridge, and (1-2 millimeter) generally is difficult to regulate the optimum position because the gap is too small.

The purpose of this utility model is a kind of discharge type spark plug, and what it adopted is the point discharge principle design, not only can make discharge spark current strength fixed point, location, and improve engine complete machine operating efficiency.

The electrode discharge head was a cutting-edge structure in the purpose of this utility model was achieved in that, its electrode of the conjuncted protheca of external electrode is to adopt the hemisphere face structure, thereby reached the designing requirement of point discharge principle; With the conjuncted structure of modification of former external electrode be, conjuncted protheca of external electrode and the conjuncted recoil of external electrode structure, tight-lipped solid with inside and outside silk, standard clearance is installed between two parts adjusts pad, its gap adjustment is finished by three kinds of specifications of (0.2) (0.5) (1.0) millimeter, has so not only increased the gap adjustment but also has made things convenient for the removing of carbon deposit and rich oil; For the loss of electrode tip in overcoming in the discharge course of work, what electrode tip adopted in it is replaceable structure; In order to overcome the generation of carbon deposit and rich oil, improve the insulation property between the internal and external electrode, scribble ceramic insulating layer at the conjuncted protheca inwall of external electrode.

Owing to adopt such scheme, not only make the discharge type spark plug have the discharging efficiency height, standardization is adjusted in the gap, carbon deposit and rich oil are removed very convenient, can also accomplish that part partly changes, in maintenance, saved the expense expenditure like this, and discharge type overall spark plug technical performance is improved.

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

Fig. 1 is a well known spark plug longitudinal profile structural map.

Fig. 2 is the utility model discharge type spark plug longitudinal profile structural map.

Fig. 3 is that the utility model discharge type spark plug is overlooked full figure.

The 1. interior conjuncted 4. hollow pads of electrode 2. internal and external electrode ceramics insulators 3. external electrodes 5. conducting rings are formed among Fig. 1.

The pad composition is adjusted in 1. interior 4. hollow pads, 5. conducting rings, 6. gaps, the conjuncted recoil of the conjuncted protheca 3-2 of electrode 2. internal and external electrode ceramics insulator 3-1 external electrodes external electrode among Fig. 2.It installs and uses with well known spark plug identical, different is that the gap adjustment should be greater than well known spark plug 1-2 millimeter, after the discharge type spark plug employing point discharge principle that Here it is, its discharge spark acts on air and gasoline mixture body effective density and the increase of arcing length in the cylinder, and engine ignition timing performance and completing combustion are achieved.

Claims

1, a kind of discharge type spark plug,, hollow pad (4) conjuncted by interior electrode (1), internal and external electrode ceramics insulator (2), external electrode, conducting ring (5) are formed, interior electrode (1) is tightly filled in insulator (2), the sheathed conducting ring in its lower end (5), conjuncted insulator (2) front portion that is placed on of external electrode, the bottom surface of the set electrode of its front end and interior electrode (1) form discharging gap, it is characterized in that

1.1 interior electrode tip (1) adopts cutting-edge structure, termination electrode adopted the hemisphere face structure before external electrode was conjuncted;

1.2 the conjuncted two parts that are divided into of external electrode comprise a protheca (3-1) and a back seat that is threaded with protheca (3-2).

2, discharge type spark plug according to claim 1, the standard clearance that it is characterized in that being equipped with (0.2), (0.5), three kinds of specifications of (1.0) millimeter between external electrode conjuncted (3-1) and back seat (3-2) is adjusted pad (6).

3,, it is characterized in that discharging gap being adjusted at 2～4 millimeters by adjusting pad (6) according to claim 1,2 described discharge type spark plugs.