RU2570139C1 - Ice combustion mix igniter - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: claimed device comprises the spark plug with insulator fitted thereon. Said spark plug is fitted in the ferrule provided with lengthwise inner grooves and threaded joint with the engine cylinder block head and with the spark plug. The plug with legs their ends being fitted nearby the ferrule end face, from the insulator side, opposite the insulator end face in aforesaid head. Spark plug contact head cap is arranged inside the insulator and has tabs to clasp the contact head. Said cap has the lengthwise groove for current-conducting rod end to be fitted therein, said rod being arranged in insulating tube. The latter is inclined relative to the spark plug while its end is fitted in lateral bore made in said insulator opposite the cap.

EFFECT: compact design for ease of arranging the engine cylinder block head, the engine being converted from diesel ICE to gas engine.

2 cl, 2 dwg

Description

The invention relates to internal combustion engines. It concerns the ignition of a combustible mixture in a gas-fired internal combustion engine.

There are various devices for ignition of a combustible mixture in an internal combustion engine, shown in patents No. 2092951, 2100886, 2240637, 2268552, issued in the Russian Federation, in application No. 2064000 published in the UK, in applications No. 2948043, 19624104, published in Germany . A closer analogue is a device for ignition of a combustible mixture in an internal combustion engine, shown in patent No. 2343305, issued in the Russian Federation. This device for ignition of a combustible mixture contains a spark plug connected to a cylinder head by a thread, a sleeve having a threaded portion connected to a cylinder head of the engine, and a cylindrical section with a conical narrowing joined to a recess inside the cylinder head in which the candle is mounted ignition. A tubular insulator is installed in the sleeve, to which a terminal is mounted, which is mounted on the electrode of the spark plug, and a terminal for connecting the electric wire, between the terminals in the insulator a spring and a conductor made in the form of a rod are installed. However, this device for ignition of a combustible mixture has a relatively large height, which makes it difficult to place it in the cylinder head of a gas engine.

The objective is to increase the convenience of placing a device for igniting a combustible mixture in the cylinder head of an internal combustion engine when converting a diesel engine into a gas engine using an electronically controlled fuel injector system, namely the Common Rile system.

Improving the convenience of placement and at the same time ensuring the convenience of assembling a device for ignition of a combustible mixture in an internal combustion engine containing a spark plug with an insulator put on it, is ensured by the fact that the spark plug is located in the lining, which is made with longitudinal internal grooves and has a threaded connection to the head a cylinder block of the engine and with a spark plug, opposite the end of the insulator in the head of the cylinder block there is a plug having legs, the ends of which are located at the end of the futorka between the side protrusions made in the insulator. A cap of the contact head of the spark plug is installed inside the insulator, having tabs covering the contact head, a longitudinal groove is made in the cap of the contact head, in which the end section of the conductive rod installed in the insulating tube located obliquely relative to the spark plug is inserted, the end of the insulating tube is located in the side hole made in the insulator opposite the electrode cap.

With this embodiment, a device for igniting a combustible mixture in an internal combustion engine using a spark plug has a relatively small height, which makes it possible to conveniently place it in the cylinder head of the engine, convertible from diesel to gas. At the same time, the convenience of its assembly in the cylinder head is ensured.

To ensure the convenience of disassembling this device, the plug closing the insulator is made with a tip having a threaded hole and fixed with a bracket connected to the cylinder head using a threaded fastener. A transverse hole is made under the plug in the insulator.

The figure 1 shows a device for ignition of a combustible mixture in a gas internal combustion engine.

The figure 2 shows a section along aa of figure 1.

A device for igniting a combustible mixture in a gas internal combustion engine, shown in figures 1 and 2, contains a spark plug 1 with an insulator 2 on it, having a stepped cylindrical shape. The spark plug 1 is located in the foot 3, which has a threaded connection with the cylinder head 4 of the engine block and the spark plug 1. The block 3 is made with longitudinal internal grooves 5 for ease of screwing into the cylinder head 4. Opposite the end of the insulator 2 in the hole in the head of the cylinder block, in which the foot 3 and the insulator 2 are placed, is installed a plug 6 having legs 7, the ends of which are located at the end of the futor 3 on the side of the insulator 2 between the side protrusions made therein. The plug 6 covering the insulator 2 is made with a tip 8 having a threaded hole 9 for the convenience of pulling it out of the cylinder head when disassembling the ignition device of the combustible mixture. The plug 6 is fixed with a bracket 10 connected to the cylinder head by means of a threaded fastener 11. A transverse hole 12 is made under the plug 6 in the insulator 2 to facilitate pulling out the insulator when disassembling the ignition device of the combustible mixture. Inside the insulator 2 there is a metal cap 13 of the contact head 14 of the spark plug, having tabs 15, which form a terminal covering the contact head. A longitudinal groove 16 is made in the cap 13 of the contact head 14, which is cylindrical in shape, into which an end portion of the conductive rod 17 is connected, connected to a power source, for example, an induction coil. The conductive rod 17 is installed in the insulating tube 18, located obliquely relative to the spark plug. The end of the tube 18 is located in a side hole made in the insulator 2 opposite the cap 13 of the contact head 14.

To ignite the combustible mixture, an electric current is passed through the rod 17 from the induction coil to the cap 13 of the contact head 14 of the spark plug. An electric current passes from the contact head to the central electrode 19 of the spark plug, and from it to the side electrode 20 through the gap between them. When an electric current passes through the gap between the central and side electrodes, a spark is formed that ignites the combustible mixture in the engine cylinder to make the piston stroke in it.

The created device for ignition of a combustible mixture in a gas internal combustion engine has a relatively small height, as a result of which it is conveniently located in the cylinder head of an engine convertible from diesel to gas. When converting a diesel engine into a gas engine, the nozzle cup is replaced with a spark plug lid, and the diesel fuel inlet is used to install a conductive rod, which greatly simplifies the conversion of an internal combustion engine.

Claims (2)

1. A device for ignition of a combustible mixture in an internal combustion engine, comprising a spark plug with an insulator put on it, characterized in that the spark plug is located in a futorok, which is made with longitudinal internal grooves and has a threaded connection to the cylinder head of the engine and to the spark plug , opposite the end of the insulator, a plug is installed in the cylinder head with legs, the ends of which are located at the end of the futorka between the side protrusions made in the insulator, a cap of the contact head of the spark plug having tabs covering the contact head, a longitudinal groove is made in the cap of the contact head, into which an end portion of the conductive rod installed in an insulating tube located obliquely relative to the spark plug is inserted, the end of the insulating tube is located in a side hole made in insulator opposite the cap of the contact head. 2. A device for igniting a combustible mixture according to claim 1, characterized in that the plug closing the insulator is made with a tip having a threaded hole and is fixed with a bracket connected to the cylinder head using a threaded fastener under the plug in the insulator a transverse hole is made.

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