SU1286797A2 - Internal combustion engine fuel feed limiter - Google Patents

Description

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The invention relates to an engine building, namely to devices for regulating the fuel supply of an internal combustion engine.

The purpose of the invention is to increase reliability by extending the functionality of the fuel limiter.

Figure 1 is a schematic diagram of the device; Fig. 2 shows the dependence of the output pressure of the sensors on the temperature of the surrounding air t and on the temperature of the fuel t,; FIG. 3 shows the dependence of the rotational speed ho of the crankshaft of the engine on the displacement of the stem of the out-of-positioner.

The internal combustion engine 1 is equipped with a turbocharger 2 to which the suction inlet 3 is connected. A regulator 4 rotational speed is connected to the organ 5 for metering fuel through lever 6. The pipeline 7 through an electropneumatic valve 8 connected to the thermal relay 9 is connected to pipelines 10 and 11, equipped with transducers of fuel temperature 12 and ambient air temperature 13.

A fuel temperature transducer is installed in the fuel pump pipe 14, 15. The outputs of the ambient air and fuel temperature transducer sensors are connected to an adder consisting of measuring devices 16 and 17, respectively, connected through the rocker j8 to the slide 19 of the hydraulic booster 20 track type. The output rod 21 of the hydraulic booster 20 interacts with the rail of the fuel pump 22 and, through the stop 23, onto the lever 24, the movable stop 25 fixedly mounted on t 26, and the action 27 tightening the regulator spring .4. Through lever 24, movable

air from pipeline 7 flows through pipelines 10 and 11 to transducer sensors for ambient temperature 13 and fuel temperature

5 12 in the output pneumatic signal of a certain size (Fig. 2). The pneumatic signal enters the working cavities of the measuring devices 16 and 17, where it is converted into the displacement of their rods.

to and the associated rocker 18, kinematically connected also to the spool 19 of the follower hydraulic drive 20. Accordingly, the displacement of the stem 21 moves to the displacement of the spool 19

J5 hydraulic booster 20, correcting this cycle fuel supply.

Simultaneously with the displacement, the output stem 21 of the hydraulic booster 20 rotates the lever 24, which moves

20 an abutment 25 together with a thrust 26 connected with the lever 27, which influences the change in the tightening of the regulator spring, in the direction of reducing the frequency of rotation of the diesel crankshaft. While this levers 28 compresses the spring 29, and the lever 30, experiencing the force from the output shaft 31 of the positioner 32, remains stationary.

When the temperature of the ambient air and fuel decreases, the control air pressure from the temperature sensors 13 and 12 decreases, and the rods of the measuring devices 16 and .17 and the kinematically associated with the slide valve 19

35 of the power steering 20, the rocker 18 is moved in the opposite direction. Output . The hydraulic rod 21 of the hydraulic booster gradually returns to its original position, thereby allowing the cyclic

40 fuel supply. In this case, the lever 24 moves away from the stop 25. Under the action of the spring 29, the lever 28, ha ha 26, kinematically connected with the lever 27, moves to the initial position, allowing

thirty

stop 25, lever 28, spring 29, lever thereby increase the frequency of rotation

air from pipeline 7 flows through pipelines 10 and 11 to transducer sensors for ambient temperature 13 and fuel temperature

12 into the output pneumatic signal of a certain magnitude (f.ig.2). The pneumatic signal enters the working cavities of the measuring devices 16 and 17, where it is converted into the displacement of their rods.

and associated with them the rocker 18, kinematically connected also with the spool 19 follower hydraulic 20. Accordingly, the displacement of the spool 19 moves the output rod 21

hydraulic booster 20, correcting this cycle fuel supply.

Simultaneously with the displacement, the output rod 21 of the hydraulic booster 20 rotates the lever 24, which moves the stop 25 together with the tension 26 connected with the lever 27, which affects the change in tightening of the regulator spring, in the direction of lowering the frequency of rotation of the crankshaft of the diesel engine. At this time, the lever 28 compresses the spring 29, and the lever 30, experiencing the force from the output shaft 31 of the positioner 32, remains stationary.

When the temperature of the ambient air and fuel decreases, the control air pressure from the temperature sensors 13 and 12 decreases, and the rods of the measuring devices 16 and 17 and kinematically connected with the spool 19 of the hydraulic booster 20 of the rocker 18 move in the opposite direction. The output rod 21 of the hydraulic booster gradually returns to its original position, thereby permitting an increase in cyclic power.

fuel supply. In this case, the lever 24 moves away from the stop 25. Under the action of the spring 29, the lever 28, ha ha 26, kinematically connected with the lever 27, moves to the initial position, allowing

30 and the rod 31 of the positioner 32 the output rod 21 of the hydraulic booster 20 interacts with the positioner.

The device works as follows.

When the ambient air temperature rises above the standard, the thermal switch 9 is activated. The electropneumatic valve 8 opens and the compressed

50

diesel engine

The engine's fuel injection limiter for the internal combustion engine provides for automatic limitation (regulation) of the weight fuel supply and the diesel engine rotational speed, depending on the ambient air temperature and fuel temperature.

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Claims (1)

FUEL SUPPLY LIMITER. INTERNAL COMBUSTION ENGINE by * ed. No. 1090908, characterized in that, in order to increase reliability by expanding the functionality, the hydraulic booster is made with a stop, which is located on its rod, and with a two-arm lever for interaction of the stop with the positioner of the regulator frequency setting body through the rod.