RU101097U1 - INFLATABLE INFLATABILITY INCREASED SYSTEM OF A TRANSPORT DIESEL - Google Patents

Abstract

A system for increasing the throttle response of a supercharged transport diesel engine, containing a compressed air receiver, a standard compressor, a filter, a reducer, an air filter, a compressor, a turbine, a muffler, an exhaust pipeline, an engine, an intake pipeline, a switch on the instrument panel, a microswitch under the fuel pedal, which in that it contains an electronic control unit with electric sensors for charge air pressure in the intake manifold and compressed air pressure in the receiver, which controls the electro-pneumatic valve.

Description

The proposal relates to mechanical engineering, namely to engine building and can be used to increase the throttle response of a diesel engine (vehicle) in extreme conditions (when a sharp increase in speed is required) when the fuel pedal is in the extreme position.

A device for increasing the throttle response of a tank power plant is known, which contains air cylinders, an air filter, a reducer, pipelines, an electro-pneumatic valve, an inlet pipe, an engine, a switch located on the instrument panel, a micro switch, a fuel supply pedal, a boost pressure sensor consisting of a membrane with normally closed contacts, springs, covers and housings. (Author's certificate of the Russian Federation No. 2176742 2000 F02D 23/02 Moskalev B.C. Combined Arms Academy of the Armed Forces of the Russian Federation)

The disadvantages of the known device is the complexity and lack of efficiency of the charge pressure sensor during transient conditions (acceleration of the vehicle), namely, this sensor has a delayed response on and off, since the pressure of the charge air acting on the membrane with the spring through the air in the tube from the intake manifold to the boost pressure sensor, it takes longer than the electrical signal. In addition, the membrane of the boost pressure sensor under the action of variable loads has a limited service life; the spring requires constant temperature and periodic adjustment; electrical contacts have a limited life, due to possible burning due to arcing during closure and opening. Also, in the absence of the necessary pressure of compressed air in the receiver and with the switch off, located on the instrument panel, the mechanical part (membrane, spring) will continue to idle, which will reduce the device uptime.

This design is the closest to the proposed technical essence and adopted as a prototype.

The objective of the proposal is to increase the efficiency and throttle response of a supercharged transport diesel engine under transient engine operating conditions - acceleration of a vehicle, improve the operability and reliability of the system design, by improving it.

The solution to this problem is achieved by the fact that the system is equipped with an electronic control unit that receives signals from electric sensors for charge air pressure in the intake pipe and compressed air pressure in the receiver and controls at maximum fuel supply (fully depressed fuel supply pedal), by turning it on (off) ) electro-pneumatic valve, the final pressure of charge air in the intake pipe, which is necessary for complete combustion of fuel in the engine cylinders.

An analysis of the proposed solution and the known ones allows us to conclude that it meets the patentability conditions of the utility model.

The proposal is illustrated in the figure (figure 1), which shows a system for increasing the throttle response of a transport diesel engine.

The proposed system for increasing the injectivity of a transport diesel engine with a supercharger contains a receiver 1 with compressed air, a standard compressor 2, a filter 3, a reducer 4, an air filter 5, an electro-pneumatic valve 6, a compressor 7, a turbine 8, a muffler 9, an exhaust pipe 10, an engine 11, an intake pipe 12, charge air pressure sensor 13, electronic control unit 14, switch 15 on the instrument panel, micro switch 16 under the fuel supply pedal 17, pressure sensor for compressed air in the receiver 18.

The proposed system for increasing the throttle response of a transport diesel engine is as follows.

Before starting the movement, the driver turns on the switch 15 on the instrument panel.

With uniform movement (preferential engine operation) of the vehicle, air through the air filter 5 through the air duct enters the compressor 7, is compressed in the compressor and under the necessary pressure enters the cylinders of the engine 11 (the turbocompressor is calculated for one operating point at which it operates with the maximum coefficient of performance, as the calculated point, the characteristic point of the engine characteristic is selected, near which the preferred modes of its operation are located). After the working process in the cylinders of the engine 11, the exhaust gases flow through the exhaust pipe to the turbine 8 and then through the muffler 9 are discharged into the atmosphere. Additional air from the pick-up system does not enter the intake pipe 12.

When the driver sharply and maximally presses the fuel supply pedal 17, the maximum fuel supply to the engine cylinders 11 occurs. The microswitch 16 located under the fuel supply pedal 17 closes, providing an electrical signal to the electronic control unit 14 of the operation of the electro-pneumatic valve 6. The electronic control unit 14 considering signals from the charge air pressure sensor 13 in the intake manifold 12 and the compressed air pressure sensor 18 in the receiver 1 controls the operation (opening) of the electro-pneumatic upan 6. The electro-pneumatic valve 6 is activated and provides the supply of additional compressed air to the inlet pipe 12 of the engine 11, making up for the missing amount of air coming from the compressor 7 during acceleration due to the inertia of the turbocompressor.

The consumed amount of air from the receiver is replenished with a standard compressor 2 of the engine 11.

When the pressure of the charge air in the intake manifold 12 reaches the required value for complete combustion of the fuel and the turbocharger is untwisted to the required performance, the corresponding electrical signal is sent from the charge air pressure gauge 13 to the electronic control unit 14, which will turn off the electropneumatic valve 6 and supply additional air to the intake manifold 12 from receiver 1 will stop.

Compared with the prototype, the proposed system provides improved design (improved performance and reliability) to improve the consistency of the piston of the engine and the air supply system, increase the efficiency of the transport diesel engine with supercharged transient engine operation - acceleration of the vehicle, improves engine throttle response (accelerates engine response to increase fuel supply), improves fuel economy, reduces the emission of toxic components in the exhaust gas (arising from incomplete combustion of fuel).

These advantages indicate the achievement of the task - increasing the efficiency and throttle response of a transport diesel engine with supercharged transient engine operation - acceleration of the vehicle, improving the performance and reliability of the system design, by improving it.

Claims (1)

A system for increasing the injectivity of a transport diesel engine with a supercharger containing a receiver with compressed air, a standard compressor, a filter, a gearbox, an air filter, a compressor, a turbine, a muffler, an exhaust pipe, an engine, an intake pipe, a switch on the instrument panel, a micro switch under the fuel pedal, the fact that it contains an electronic control unit with electric sensors for charge air pressure in the intake pipe and compressed air pressure in the receiver, controlling the electro-pneumatic valve.