CS212901B1 - Connection for electronic limitation of revolutions of the combustion ignition engines - Google Patents

Description

The subject of the invention is an electronic speed limitation of internal combustion engines operating on the principle of regulating the amount of energy supplied by the ignition system to the spark plug circuit.

In the case of internal combustion engines, it is often necessary to deal with the question of protection of which and with regard to exceeding the maximum engine speed. If the maximum engine speed is exceeded, there is a risk of its destruction or deterioration, and consequently, considerable economic damage. Overtemperature protection should be provided, for example, for load-lift trucks or cars and at high power, where the limit speed can be exceeded during acceleration when a low gear is engaged.

The prior art speed controllers usually operate on mechanical or electromechanical principles, whereby the engine speed is controlled by a mebhanic or electromechanical controller controlling the carburetor. Electronic ayatams are known for this purpose, which operate by switching off the ignition system when the engine speed is exceeded and / or by changing the ignition timing so that the engine no longer increases its speed. Although mechanical controllers are simple, they have low durability and reliability. In addition, they cannot be accurately and stably adjusted. Elektromecha212 901

212 901 low controllers are quite complex and require the use of an astronomy system to operate the carburetor, which again has a low reliability. When the engine speed is reduced by switching off the ignition system, the engine wears more because shocks occur when the ignition fails. In addition, there is also considerable air pollution due to increased exhalation. There are similar deficiencies in 1 systems operating and by changing the lead.

The drawbacks of the prior art spark-ignition engine speed regulators are eliminated by the electronic spark-ignition engine speed-limiting circuit of the spark plug circuit of the present invention, which is connected to the spark-plug circuit of the internal combustion engine. an electronic ignition block coupled through a pulse to frequency converter block and a reference circuit and a deviation amplifier block which is reconnected via the correction circuit block to the electronic ignition block.

The effect of the circuitry for the electronic speed limitation of spark-ignition internal combustion engines is mainly that the engine operates smoothly and without shocks in the limiting area. In addition, this connection permits a speed limitation even at low speeds, i.e. a low speed. over the entire engine speed range, without the risk of engine flooding. This also avoids the occurrence of harmful waste products.

The circuit according to the invention is schematically shown in the attached drawing, which is a block diagram of the electronic speed limitation of spark-ignition internal combustion engines.

The spark circuit of the internal combustion engine spark plug block 2 is connected to the electronic ignition block 2 connected via the pulse rate converter 4 to the reference circuit 4 and the deflector amplifier block which is connected back to the electronic ignition system block 2 via the correction circuit block. .

The electronic speed limitation circuit starts to operate when the selected speed is reached, depending on the gear engaged, so that the energy supplied by the ignition system to the spark plug circuit aa reduces and does not allow the engine to exceed the speed set by the reference circuit. The engine speed is proportional to the number of fires from the electronic ignition assembly 2. The number of fires ee in the pulse to voltage converter block 6 converts to DC voltage. When the DC voltage reaches the level set by the reference circuit 6, a voltage deviation occurs, which in the amplifier block deviates 2 e and increases and the voltage flow ae is adjusted in the correction circuit J. As the engine speed increases, the electronic ignition aouatavy in the electronic ignition system block 2 decreases.

2X2 901 than the corresponding voltage from the reference circuit 6 supplies the electronic ignition block with 2 µl of power. Only when the speed is so high that the voltage from the pulse transducer block to the voltage reaches the reference voltage does the control process start.

The speed limitation limit can be varied over a wide range by varying the voltage coming from the reference circuit 6.

A signaling device can be connected to the control circuit to indicate that the speed is within the limiting range. a shut-off lever, by pressing of which the control circuit opens, eg when overtaking no lower gear etc.

Wiring for the electronic speed limitation of spark-ignition internal combustion engines is advantageously used, for example, in racing cars and motorcycles, in material handling equipment such as forklift trucks, as a protective circuit for brake measurements and the like.

Claims (1)

SUBJECT OF THE INVENTION Circuit for spark ignition electronic speed limitation, operating on the principle of regulating the amount of energy supplied by the ignition system to the spark plug circuit, characterized in that the spark ignition block (1) of the internal combustion engine is connected to an electronic ignition block (2) a pulse-to-frequency converter block (4) with a reference circuit (6) and a deviation amplifier block (5) which is connected back to the electronic ignition system (2) by means of a correction circuit block (3).