CN217582314U - Distributed gas-electric control speed regulation system - Google Patents

Abstract

The utility model provides a distributing type gas electric control speed governing system, belong to the diesel engine control technology field, adopt the pneumatic piston mechanism of taking the proportional solenoid valve to replace traditional mechanical type fuel rack drive mechanism, cancelled the speed governing executor, simplified system architecture, reduced the fault rate, improved fuel quantity control accuracy, it is controllable adjustable to realize the diesel engine fuel feeding, simple to operate, control is simple, cost and fault rate are reduced, the economic nature and the security of diesel engine operation have been improved, be convenient for realize the diesel engine automated control.

Description

Distributed gas-electric control speed regulation system

Technical Field

The utility model belongs to the technical field of the diesel engine control, concretely relates to distributing type gas electric control speed control system.

Background

The speed regulation of the diesel engine is realized by driving a fuel rack mechanical transmission mechanism by an actuator and controlling the quantity of fuel entering the high-pressure oil pump by a fuel rack. The electronic injection diesel engine adopts a common rail technology and a fuel electromagnetic injection valve to realize the control of fuel injection quantity, the fuel injection is controllable and adjustable, and the high-efficiency operation of the diesel engine is realized. However, in the traditional fuel rack and mechanical transmission mechanism mode, the mechanism is complex, the occupied space is large, the failure rate is high, the failures such as mechanism clamping stagnation, connection looseness and the like are easy to occur, and online monitoring is not easy to realize; the common rail technology and the electromagnetic injection valve have the advantages of high cost, complex control system, high maintenance difficulty and high requirement on the technical capability of operation and maintenance personnel. There is therefore a need for improvements.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem: the utility model provides a distributing type gas electric control speed governing system, the utility model discloses a take the pneumatic piston mechanism of proportional solenoid valve to replace traditional mechanical type fuel rack drive mechanism, cancelled the speed governing executor, simplified the system architecture, reduced the fault rate, improved fuel volume control accuracy, it is controllable adjustable to realize the diesel engine fuel feeding, simple to operate, control are simple, and cost and fault rate are reduced has improved the economic nature and the security of diesel engine operation, are convenient for realize diesel engine automated control.

The utility model adopts the technical proposal that: the distributed pneumatic-electric control speed regulation system comprises a mechanical high-pressure oil pump, an oil sprayer and a speed regulation controller, wherein an oil inlet of the mechanical high-pressure oil pump is connected with a fuel oil inlet pipe, an oil return port of the mechanical high-pressure oil pump is connected with the fuel oil return pipe, an oil outlet of the mechanical high-pressure oil pump is connected with an oil inlet of the oil sprayer, a leakage port of the oil sprayer is connected with a leakage oil pipe of the oil sprayer, the distributed pneumatic-electric control speed regulation system further comprises a proportional solenoid valve type pneumatic piston mechanism, an air inlet of the proportional solenoid valve type pneumatic piston mechanism is connected with a speed regulation compressed air pipe, a piston end of the proportional solenoid valve type pneumatic piston mechanism is connected with a fuel oil rack in the mechanical high-pressure oil pump, and the speed regulation controller is connected with the proportional solenoid valve type pneumatic piston mechanism to convey signals to the proportional solenoid valve type pneumatic piston mechanism.

Further inject above-mentioned technical scheme, proportion solenoid valve formula pneumatic piston mechanism includes proportion solenoid valve, pneumatic piston, reset spring and connecting rod, be equipped with the proportion solenoid valve on pneumatic piston's the inlet port, the air inlet and the speed governing compressed air pipe of proportion solenoid valve are connected, the coil passing signal line of proportion solenoid valve is connected with the speed governing controller, the inside reset spring that is equipped with of pneumatic piston, pneumatic piston one end fixedly connected with connecting rod, the fuel rack fixed connection of connecting rod and mechanical type high-pressure oil pump.

Further inject above-mentioned technical scheme, mechanical type high-pressure oil pump includes high-pressure oil pump body, plunger and fuel rack, the inside plunger that is equipped with of high-pressure oil pump body, the plunger outside be equipped with be used for with the gear of fuel rack toothing, the compressed air pipe that parks is connected to an air inlet on the high-pressure oil pump body.

Compared with the prior art, the utility model advantage:

the scheme aims at the defects that a mechanical fuel rack transmission mechanism in a traditional diesel engine speed regulating system is complex in structure, high in failure rate and difficult to realize automatic control and online monitoring, a pneumatic piston mechanism with a proportional solenoid valve is adopted to replace the traditional mechanical fuel rack transmission mechanism, a speed regulating actuator and the traditional mechanical fuel rack transmission mechanism are omitted, the system structure is simplified, the failure rate is reduced, the fuel quantity control precision is improved, the diesel engine fuel supply is controllable and adjustable, the mounting is convenient, the control is simple, the cost and the failure rate are reduced, the economy and the safety of the diesel engine are improved, and the automatic control of the diesel engine is convenient to realize.

Drawings

Fig. 1 is a schematic diagram of the system of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element described by the phrase "comprising a. -" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Please refer to fig. 1, which illustrates an embodiment of the present invention.

The distributed gas-electric control speed regulation system comprises a mechanical high-pressure oil pump 1, an oil injector 2 and a speed regulation controller 3, wherein an oil inlet of the mechanical high-pressure oil pump 1 is connected with a fuel oil inlet pipe, an oil return port of the mechanical high-pressure oil pump 1 is connected with a fuel oil return pipe, an oil outlet of the mechanical high-pressure oil pump 1 is connected with an oil inlet of the oil injector 2, and a leakage port of the oil injector 2 is connected with a leakage oil pipe of the oil injector. The mechanical high-pressure oil pump 1 comprises a high-pressure oil pump body 1-1, a plunger 1-2 and a fuel rack 1-3, wherein the plunger 1-2 is arranged inside the high-pressure oil pump body 1-1, a gear meshed with the fuel rack 1-3 is arranged outside the plunger 1-2, and an air inlet in the high-pressure oil pump body 1-1 is connected with a parking compressed air pipe.

The proportional electromagnetic valve type pneumatic piston mechanism 4 comprises a proportional electromagnetic valve 4-1, a pneumatic piston 4-2, a reset spring 4-3 and a connecting rod 4-4, the proportional electromagnetic valve 4-1 is arranged on an air inlet port of the pneumatic piston 4-2, an air inlet of the proportional electromagnetic valve 4-1 is connected with a speed regulation compressed air pipe, a coil of the proportional electromagnetic valve 4-1 is connected with a speed regulation controller 3 through a signal line, the speed regulation controller 3 transmits signals to the speed regulation controller, the reset spring 4-3 is arranged inside the pneumatic piston 4-2, one end of the piston 4-2 of the pneumatic piston is fixedly connected with the connecting rod 4-4, and the connecting rod 4-4 is fixedly connected with a fuel rack 1-3 of the mechanical high-pressure oil pump 1.

When the system works, the speed regulation controller 3 outputs a signal according to a diesel engine rotating speed/load command to control the proportional electromagnetic valve 4-1, compressed air entering the pneumatic piston 4-2 is controlled, so that the piston of the pneumatic piston 4-2 is pushed to move linearly, the piston drives the fuel rack 1-3 to move linearly through the connecting rod 4-4, the control on the fuel quantity entering the mechanical high-pressure oil pump 1 is realized, the fuel supply quantity is matched with the diesel engine rotating speed/load, and the fuel enters the fuel injector 2 after being pressurized by the mechanical high-pressure oil pump 1 and is injected into a cylinder for combustion. When the diesel engine is stopped, the speed regulation controller 3 outputs a zero fuel supply command to the proportional solenoid valve 4-1, the proportional solenoid valve 4-1 is closed, the return spring 4-3 in the pneumatic piston 4-2 pushes the piston to drive the fuel rack 1-3 to return to a zero fuel supply position, the fuel of the mechanical high-pressure oil pump 1 is cut off, and the diesel engine is stopped. When emergency shutdown is needed in emergency, an external control system (out of the range of the system) controls the emergency shutdown electromagnetic valve to be opened, the compressed air is stopped to lift the plunger 1-2 of the mechanical high-pressure oil pump 1, fuel oil is cut off rapidly, and the diesel engine is stopped rapidly.

The utility model discloses a take pneumatic piston mechanism of proportional solenoid valve to replace traditional mechanical type fuel rack drive mechanism, cancelled the speed governing executor, simplified the system architecture, reduced the fault rate, improved fuel volume control accuracy, realize that the diesel engine fuel feeding is controllable adjustable, simple to operate, control are simple, and cost and fault rate have been reduced, have improved the economic nature and the security of diesel engine operation, are convenient for realize diesel engine automated control.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims (3)

1. Distributed gas electric control speed regulation system, including mechanical type high-pressure oil pump (1), sprayer (2) and speed governing controller (3), mechanical type high-pressure oil pump (1) oil inlet is connected the fuel and is advanced oil pipe, mechanical type high-pressure oil pump (1) oil return opening is connected the fuel and is returned oil pipe, mechanical type high-pressure oil pump (1) oil-out is connected with sprayer (2) oil inlet, sprayer (2) are let out the leakage mouth and are connected sprayer and let out oil pipe, its characterized in that: the high-pressure oil pump is characterized by further comprising a proportional solenoid valve type pneumatic piston mechanism (4), wherein an air inlet of the proportional solenoid valve type pneumatic piston mechanism (4) is connected with a speed regulation compressed air pipe, a piston end of the proportional solenoid valve type pneumatic piston mechanism (4) is connected with a fuel rack (1-3) in the mechanical high-pressure oil pump (1), and the speed regulation controller (3) is connected with the proportional solenoid valve type pneumatic piston mechanism (4) to transmit signals to the proportional solenoid valve type pneumatic piston mechanism.

2. The distributed gas-electric control speed regulation system according to claim 1, characterized in that: the proportional electromagnetic valve type pneumatic piston mechanism (4) comprises a proportional electromagnetic valve (4-1), a pneumatic piston (4-2), a reset spring (4-3) and a connecting rod (4-4), wherein the proportional electromagnetic valve (4-1) is arranged on an air inlet port of the pneumatic piston (4-2), an air inlet of the proportional electromagnetic valve (4-1) is connected with a speed regulation compressed air pipe, a coil of the proportional electromagnetic valve (4-1) is connected with a speed regulation controller (3) through a signal line, the reset spring (4-3) is arranged inside the pneumatic piston (4-2), one end of the piston of the pneumatic piston (4-2) is fixedly connected with the connecting rod (4-4), and the connecting rod (4-4) is fixedly connected with a fuel rack (1-3) of a mechanical high-pressure oil pump (1).

3. The distributed gas-electric control speed regulation system according to claim 2, characterized in that: the mechanical high-pressure oil pump (1) comprises a high-pressure oil pump body (1-1), a plunger (1-2) and a fuel rack (1-3), wherein the plunger (1-2) is arranged inside the high-pressure oil pump body (1-1), a gear meshed with the fuel rack (1-3) is arranged outside the plunger (1-2), and an air inlet in the high-pressure oil pump body (1-1) is connected with a parking compressed air pipe.

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