CN2608715Y - No-distributor ignition signal generator for petrol engine - Google Patents

Abstract

The utility model discloses a gasoline non distributor ignition signal generator. A rotor(4) with cut is installed on the rotor shaft(3), an eccentric ignition advancer(7) and an ignition signal transducer group are integrated with the bracket(6) with an ignition signal generator cover(1) above and a transmission component(9) below. The shell(8) is provided with a vacuum ignition advancer(5) and generator cover spring clip(2). On the basis of maintaining the eccentric ignition advancer and the vacuum ignition advancer of traditional electronic ignition device, the utility model is added with 1 to 3 the same ignition signal transducers to redesign the electronic ignition group. The utility model eliminates the distributor rotor arm and the distributor cover in traditional ignition device to reduce the inter sectors and energy loss in the process of the transmission of the high tension current. The utility model realizes non distributor ignition and ensures reliable ignition. The utility model has the advantages of simple structure, low cost and convenient to adjust and repair. The utility model is suitable for gasoline engines of two, three, four, six and eight cylinders.

Description

Petrol engine distributorless ignition signal generator

Technical field: the utility model relates to the petrol engine ignition mechanism, particularly a kind of petrol engine distributorless ignition signal generator.

Background technique: the non-contact electronic ignition device that most vehicle gasoline engines use in the prior art all adopts the mechanical type distribution system, is commonly called as " distributor ".In this ignition mechanism, no matter what cylinders motor has, a fire signal sensor is all only arranged, produce high-tension discontinuous current part also only with a high-power semiconductor switch element and a spark coil, must use simultaneously split fire head and distributor cap that the high-tension current of spark coil output igniting is transported to each spark plug, regulate ignition advance angle by centrifugal force and intake depression.This ignition mechanism mainly contains following deficiency: the one, and the output voltage of spark coil rises and obviously descends with engine speed; The 2nd, split fire head and distributor cap in the transmission course of high-tension current except that causing the loss of bigger ignition energy, faults such as aging and electric leakage also appear easily, cause the motor can't proper functioning, this fault be occupied larger proportion in the various faults of whole igniting system; The 3rd, the adjusting of ignition advance angle is not accurate enough.

Abroad all adopting on the vehicle gasoline engine on the basis of control fuel injection in recent years, developed fully by computer-controlled distributorless ignition device, it is compared with traditional ignition mechanism, because each cylinder uses a spark coil (independent igniting) or per two cylinders to use a spark coil (igniting simultaneously), the secondary output voltage of spark coil was constant substantially when engine speed rose, energy reliable ignition when guaranteeing the high engine speeds running, simultaneously owing to cancelled split fire head and distributor cap, realized distributorless ignition, it is more reliable to work.In addition, by top dead center position and engine rotation speed sensor, suction pressure and intake air temperature sensor, all multisensors such as cooling-water temperature transmitter and engine knock sensors, the ignition advance angle of being controlled by computer is also more accurate.Therefore, this advanced person's ignition mechanism can satisfy the performance requirement of vehicle gasoline engine preferably, but this ignition device structure complexity, the cost costliness, maintenance difficult needs various special devices and instrument when adjusting maintenance.

Summary of the invention: the purpose of this utility model provides a kind of petrol engine distributorless ignition signal generator, it is that centrifugal electronic spark advance controlling device and vacuum firing in keeping domestic widely used traditional ignition mechanism at present shifts to an earlier date under the constant prerequisite of controlling device, the distributorless ignition device of a kind of no split fire head simple in structure and distributor cap is provided, reach reliable operation, with low cost, keep in repair easy purpose.

Formation of the present utility model: shift to an earlier date controlling device (5), fire signal sensor groups and bracket assembly (6), centrifugal electronic spark advance controlling device (7), shell (8) and drive part (9) and form by signal generator for ignition lid (1), generator lid spring folder (2), rotor shaft (3), band breach rotor (4), vacuum firing, the quantity of fire signal sensor is more than one, and ignition system is no longer used split fire head and distributor cap.The quantity of fire signal sensor depends on the cylinder number of motor and the firing mode of employing, and every cylinder separated ignition of two cylinder machines and per two cylinders of four-cylinder are lighted a fire simultaneously, with two fire signal sensors; Every cylinder separated ignition of three cylinder machines and per two cylinders of six cylinder machines are lighted a fire simultaneously, with three fire signal sensors; Every cylinder separated ignition of four-cylinder and per two cylinders of eight cylinder machines are lighted a fire simultaneously, with four fire signal sensors.

Compared with the prior art, the utility model keeps centrifugal electronic spark advance controlling device of conditional electronic ignition mechanism and vacuum firing to shift to an earlier date on the controlling device basis of invariable basic, by increasing 1-3 identical fire signal sensor, redesign electronic ignition assembly, portion increases 1-3 high-power semiconductor switch element and correspondent peripheral circuit within it, according to the cylinder number of petrol engine and the firing mode of plan usefulness, definite spark coil quantity that needs, just can not re-use requisite split fire head and distributor cap in the conventional point fire device, so just can reduce the medium tache in the igniting high-tension electricity transmission course and the loss of ignition energy, realize distributorless ignition, the distributor cap of thoroughly eradicating split fire head is aging, break and the most common failure of traditional ignition mechanism such as electric leakage, guarantee that igniting is reliable, engine operation is normal.

The utility model is not so good as the computer-controlled distributorless ignition device except that the degree of regulation of ignition advance angle, other all ignition performance is all approaching fully, but structure of the present utility model is greatly simple, with low cost, be about about 1/10 of computer control ignition mechanism, it is easy particularly to adjust maintenance, do not need various special devices and instrument, the driver and the maintenance man that are familiar with traditional ignition mechanism can both overhaul and fix a breakdown, the automobile that relatively is fit to China uses the maintenance technique level, and utilization is promoted the use of.

Description of drawings: accompanying drawing is the utility model structural representation.

Among the figure 1, the signal generator for ignition lid, 2, generator lid spring folder, 3, rotor shaft, 4, band breach rotor, 5, vacuum firing shifts to an earlier date controlling device, 6, fire signal sensor groups and bracket assembly, 7, centrifugal electronic spark advance controlling device, 8, shell, 9, transmission part.

Embodiment: as shown in drawings, go up mounting strap breach rotor (4), centrifugal electronic spark advance controlling device (7) and fire signal sensor groups and bracket assembly (6) at rotor shaft (3), signal generator for ignition lid (1) is arranged at the top, transmission part (9) is arranged at the bottom, goes up installation vacuum firing at shell (8) and shifts to an earlier date controlling device (5) and generator lid spring folder (2).

The characteristics of the utility model maximum are not re-use split fire head and distributor cap, the quantity of fire signal sensor increases to some extent, one from original traditional ignition mechanism is increased to 2-4, determine by the cylinder number of motor and the firing mode of employing, every cylinder separated ignition of two cylinder machine and four-cylinder adopt two cylinders simultaneously during firing mode, with two fire signal sensors, when three cylinder machine separated ignitions and six cylinder machines, two cylinders are lighted a fire simultaneously, with three fire signal sensors, when four-cylinder separated ignition and eight cylinder machines, two cylinders are lighted a fire simultaneously, with four fire signal sensors.

Claims (2)

1, a kind of petrol engine distributorless ignition signal generator, shift to an earlier date controlling device (5), fire signal sensor groups and bracket assembly (6), centrifugal electronic spark advance controlling device (7), shell (8) and transmission part (9) and form by signal generator for ignition lid (1), generator lid spring folder (2), rotor shaft (3), band breach rotor (4), vacuum firing, it is characterized in that: the quantity of fire signal sensor is more than one, and ignition system is no longer used split fire head and distributor cap.

2, petrol engine distributorless ignition signal generator according to claim 1, it is characterized in that: the quantity of fire signal sensor depends on the cylinder number of motor and the firing mode of employing, every cylinder separated ignition of two cylinder machines and per two cylinders of four-cylinder are lighted a fire simultaneously, with two fire signal sensors; Every cylinder separated ignition of three cylinder machines and per two cylinders of six cylinder machines are lighted a fire simultaneously, with three fire signal sensors; Every cylinder separated ignition of four-cylinder and per two cylinders of eight cylinder machines are lighted a fire simultaneously, with four fire signal sensors.

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