SU1615417A1 - Method of controlling i.c. engine power - Google Patents

Abstract

The invention improves engine efficiency. The signals from the sensor (D) 1 rotational speed and D 2 engine loads are processed respectively in counter 3 and analog-to-digital converter 4. From the outputs of counter 3 and converter 4, signals are fed to the inputs of the storage device 5 and then through timer 6 and amplifier 7 - to injector 8. When the engine load decreases, initially, fuel delivery in several cycles in one cylinder and a running cycle of the cycle immediately following the one that was missed in this cylinder are noted. With a further reduction in load, the fuel supply to one of the cylinders is completely shut off and the fuel supply to a series of cycles in the next cylinder starts to be turned off. So smoothly regulate the engine power and sequentially shut off the engine cylinders. 5 il.

Description

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This invention relates to the automatic control of the load of internal combustion engines, in particular spark ignition gasoline engines.

The purpose of the invention is to increase the efficiency of the operation of the engine.

Figure 1 shows the shutdown program for a two-piece gasoline rotor-piston engine (RPD).

spark-ignited internal combustion with a regulating stage equal to 1/16. the indicator power with the following designations: (-) - missed cycle;

(+) - working cycle non-enriched; - l - working enriched cycle; figure 2 is the same, 15 four-stroke internal engine

burnout Fig. 3 shows a device for implementing the proposed method; Fig. 4 shows the shut-off program for a two-section RPD with an adjustment step equal to 20 1/16 of the indicator power; figure 5 - then

however, for a four-cylinder internal combustion engine.

A device for implementing the proposed method comprises a sensor 1 of rotation frequency 25, an engine load sensor 2, a counter 3, a converter 4, a memory 5, a programmable timer 6, an amplifier 7 and an injector 8 connected to a fuel line.

A device that implements the method of regulation, works as follows.

Sensor 1 forms a reference pulse at each operating cycle. Counter 3 counts these pulses. Having calculated 35 a certain number of pulses (for example, 7), the counter switches to the initial state, equal to O, and continues counting. Sensor 2 generates a signal proportional to the load on the engine. This signal 40 determines the power that the engine must develop.

Sensor 2 can be made in the form of a potentiometer, the slider of which is connected with the accelerator pedal. Sensor signal 2 45 is converted by analog-to-digital converter 4 into a load code. The code signals from the outputs of the counter 3 and converter 4 are fed to the first and second groups of inputs of the device 5 and the sampling address is determined 50. The sampling signal from the output of the device 5 enters the information D inputs of timer 6 and determines the duration of the last fuel injection pulse generated. The start of the injection pulse is synchronized by a signal with sensor 1.

The code programmed in device 5 determines the sequence of jumps and fuel skips, as well as

the duration of the injection, depending on the engine load mode, in accordance with the particular engine. Elements of this code corresponding to specific addresses take values from zero to maximum.

The control stage, i.e. the number of cycles shut off is set by the driver using the control lever disengaging the number of cycles interlocked with the accelerator pedal, and actions such as turning off the fuel supply to the working cycles, enriching the working cycles, synchronizing the fuel supply to the working cycles depending on the order of engine operation, automatic .

At all stages of regulation (with the exception of the 1/16 stage, at which there is no increase in fuel economy, since there is only one shutdown of the operating cycle, the fuel of which is spent on the enrichment of one subsequent operation cycle), there is an increase in efficiency fuel.

The engine operation mode at 8/16 stage corresponds to one section that is completely disabled, in the second section only economic operating cycles without gaps work. The enrichment of the working cycle following the missed one is carried out, starting with the shutdown of 2/16 of the indicated power (first cylinder), etc. depending on the engine load.

When shutting down work cycles that are multiples of the number of cylinders, there is no need to enrich work cycles (see shutdown 4/16, 8/16, 12/16), since in this case some of the cylinders are disabled.

Thus, the application of the proposed method will improve the efficiency of the engine, as well as reduce the toxicity of exhaust gases.

Claims (1)

Claims The method of controlling the power of an internal combustion engine is to shut off at least two cylinders while reducing the load by stopping the fuel flow into the engine cylinder for at least one cycle, increasing the fuel supply in the duty cycle following the cycle without fuel supply , and completely shutting off the fuel supply to the cylinder with a further reduction in load, characterized in that, in order to increase the efficiency of the engine, stopping the fuel supply to turn off the cylinder ndra while reducing the load is carried out for a limited number of cycles, when incorporated into the OFF operation of the cylinder fuel supply is increased therein and further reducing the load after the full shut off the cylinder, for a limited number of cycles, shut off fuel injection into the next order cylinder. Missed Unclaimed rhybohiy Work envious (Rig. / Missing other UIJKJJ Neo-Enlarged Worker Worker / iHb / i} L (u / fj7. 2