CN105604919B - A kind of vehicle air compressor energy conserving system and its control method - Google Patents

A kind of vehicle air compressor energy conserving system and its control method Download PDF

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Publication number
CN105604919B
CN105604919B CN201610138577.8A CN201610138577A CN105604919B CN 105604919 B CN105604919 B CN 105604919B CN 201610138577 A CN201610138577 A CN 201610138577A CN 105604919 B CN105604919 B CN 105604919B
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China
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air compressor
accumulator
compressor machine
air
gas
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CN105604919A (en
Inventor
李平
杨细元
陈功军
涂南明
张辉亚
沈彬
路恒
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Dongfeng Commercial Vehicle Co Ltd
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Dongfeng Commercial Vehicle Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00Pumping installations or systems specially adapted for elastic fluids
    • F04B41/02Pumping installations or systems specially adapted for elastic fluids having reservoirs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/26Compressed-air systems
    • B60T13/268Compressed-air systems using accumulators or reservoirs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06Control using electricity

Abstract

A kind of vehicle air compressor energy conserving system, including engine, air cleaner, air compressor machine, the air inlet of air compressor machine and the gas outlet of engine, the equal gas circuit connection in gas outlet of air cleaner, the air inlet of air compressor machine is successively through by-passing valve, it is connected after bypass line with the gas outlet gas circuit of accumulator, the gas outlet of air compressor machine converted valve successively, it is connected after pressure accumulation pipeline with the air inlet gas circuit of accumulator, the gas outlet of air compressor machine converted valve successively, it is connected after drier with gas receiver gas circuit, the gas storage barrel pressure pickup being connected with vehicle VCU signals is provided with gas receiver, vehicle VCU is connected with conversion valve signal;When gas receiver off-load, compressed air in air compressor machine is discharged into accumulator after converted valve, pressure accumulation circuit successively;When accumulator off-load, the pressurized air in accumulator enters in air compressor machine after bypass line, by-passing valve successively.Not only capacity usage ratio is high, cost is low by the design, and improves pneumatics engine efficiency.

Description

A kind of vehicle air compressor energy conserving system and its control method
Technical field
The present invention relates to air compressor system, more particularly to a kind of vehicle air compressor energy conserving system and its control method, mainly Suitable for improving vehicle air compressor system capacity utilization rate.
Background technology
Vehicle air compressor is one of important accessory of diesel engine, and it is empty that air compressor machine mainly provides compression for brakes Gas, current existing automobile air compressor generally use reciprocating-piston air compressor machine, by the gear train of engine, are driven air compressor machine Travelling gear, the piston of air compressor machine is moved reciprocatingly, for brakes convey compressed air.With vehicle comfortableness, warp The requirement of Ji property increasingly improves, and brakes becomes increasingly complex, also increasing to the capacity demand of air compressor machine, as air hangs Unwheeling frame, air suspension driver's cabin etc., gas consumption increase, air compressor machine using back pressure from original 0.8Mpa, be promoted to 1.25Mpa, the use condition of vehicle air compressor further deteriorate, and the oily problem of altering of air compressor machine becomes increasingly conspicuous, meanwhile, air compressor machine is attached The consumption of part work(also increases.Therefore, air compressor machine power consumption is reduced, reduces air compressor machine and alters oil mass, can be with increasing combustion engine output work, improvement Oil consumption, reduce engine oil consumption, energy-conserving and environment-protective.
Chinese patent application publication No. is CN102729930A, and data of publication of application is the disclosure of the invention on October 17th, 2012 A kind of automobile air compressor energy-saving pressurized control system, including air compressor machine booster, charge air cooler, turbocharger, air compressor machine, sky Gas dryer and exhaust brake valve, the charge air cooler gas outlet are connected with motor intake manifold, enmgine exhaust and row Air brake valve is connected, and the exhaust brake valve is connected through air tank with air compressor air intake mouth, the connection of air compressor machine booster gas outlet The air inlet of air compressor machine, the natural inflow mouth connection air cleaner of the air compressor machine booster, another outlet branch of charge air cooler Road connects the super charge mouth of air compressor machine booster, the charge air cooler air inlet connection turbocharger gas outlet, the pneumatics The air inlet of the control mouth connection air dryer of machine booster, the air inlet of another control mouth connection exhaust brake valve, row Air brake valve is connected by a switch valve with air tank, and air dryer gas outlet connects the air inlet of air tank.Though the invention The hidden danger of air compressor machine under-inflation is so avoided, but it still has following defect:In the invention during air compressor machine off-load, it will press Contracting air is discharged to air so that and energy wastes, meanwhile, to improve air compressor air intake efficiency, system sets up turbocharging Device so that engine power is low during low speed, bad response, oil consumption increase, and then make it that system cost is higher.
The content of the invention
The defects of purpose of the present invention is to overcome capacity usage ratio present in prior art low, and cost is high and problem, are carried It is high for a kind of capacity usage ratio, the low vehicle air compressor energy conserving system of cost and its control method.
To realize object above, technical solution of the invention is:A kind of vehicle air compressor energy conserving system, including start Machine, air cleaner, air compressor machine, the air inlet of the air compressor machine and the gas outlet of engine, the gas outlet of air cleaner are equal Gas circuit is connected, and the gas outlet of air compressor machine is connected after drier with gas receiver gas circuit, the air inlet and accumulator of the air compressor machine The connection of one end gas circuit, the gas outlet of air compressor machine and the other end gas circuit of accumulator connect.
The air inlet of the air compressor machine is connected after by-passing valve, bypass line with the gas outlet gas circuit of accumulator successively, empty The gas outlet of press is connected after converted valve, pressure accumulation pipeline with the air inlet gas circuit of accumulator successively, the gas outlet of air compressor machine according to It is connected after secondary converted valve, drier with gas receiver gas circuit, the switching valve is two position three-way valve.
Gas storage barrel pressure pickup is provided with the gas receiver, gas storage barrel pressure pickup is connected with vehicle VCU signals, Vehicle VCU is connected with conversion valve signal.
The by-passing valve is pneumatic diaphragm spring valve.
The by-passing valve is automatically controlled butterfly valve, and the control terminal of by-passing valve is connected with vehicle VCU signals, and vehicle VCU is with being arranged at Accumulator pressure sensor signal connection on accumulator.
The accumulator pressure sensor and gas storage barrel pressure pickup are semiconductor piezo-resistive pressure sensor.
Gas outlet of the air inlet of the air compressor machine after check valve with engine, the equal gas circuit in the gas outlet of air cleaner Connection.
A kind of control method of vehicle air compressor energy conserving system, the control method comprise the following steps:
When the descent of piston of engine driving air compressor machine:Air enters in air compressor machine after air cleaner;
When the piston stroking upward of engine driving air compressor machine:Compressed air in air compressor machine enters gas receiver after drier In;
When gas receiver off-load:Compressed air in air compressor machine is discharged into accumulator;
When accumulator off-load:Pressurized air in accumulator enters in air compressor machine.
The air inlet of the air compressor machine is connected after by-passing valve, bypass line with the gas outlet gas circuit of accumulator successively, empty The gas outlet of press is connected after converted valve, pressure accumulation pipeline with the air inlet gas circuit of accumulator successively, the gas outlet of air compressor machine according to It is connected after secondary converted valve, drier with gas receiver gas circuit, the switching valve is two position three-way valve;It is provided with the gas receiver Gas storage barrel pressure pickup, gas storage barrel pressure pickup are connected with vehicle VCU signals, and vehicle VCU is connected with conversion valve signal;Institute It is pneumatic diaphragm spring valve to state by-passing valve;
It is described when gas receiver off-load, the compressed air in air compressor machine, which is discharged into accumulator, to be referred to:When gas receiver needs off-load When, electric signal is fed back to vehicle VCU by gas storage barrel pressure pickup, and vehicle VCU sends electric signal control switching valve, so that pneumatics Gas circuit between the gas outlet of machine and the air inlet of accumulator is connected, the gas circuit between the gas outlet of air compressor machine and drier is closed Close, now, compressed air in air compressor machine is discharged into accumulator after converted valve, pressure accumulation circuit successively;It is described when accumulator unloads During lotus, the pressurized air in accumulator, which enters in air compressor machine, to be referred to:When accumulator needs off-load, the pressurized air in accumulator leads to Cross bypass line control by-passing valve to connect, now, the pressurized air in accumulator enters sky after bypass line, by-passing valve successively In press.
The air inlet of the air compressor machine is connected after by-passing valve, bypass line with the gas outlet gas circuit of accumulator successively, empty The gas outlet of press is connected after converted valve, pressure accumulation pipeline with the air inlet gas circuit of accumulator successively, the gas outlet of air compressor machine according to It is connected after secondary converted valve, drier with gas receiver gas circuit, the switching valve is two position three-way valve;It is provided with the gas receiver Gas storage barrel pressure pickup, gas storage barrel pressure pickup are connected with vehicle VCU signals, and vehicle VCU is connected with conversion valve signal;Institute It is automatically controlled butterfly valve to state by-passing valve, and the control terminal of by-passing valve is connected with vehicle VCU signals, and vehicle VCU is with being arranged on accumulator Accumulator pressure sensor signal connects;
It is described when gas receiver off-load, the compressed air in air compressor machine, which is discharged into accumulator, to be referred to:When gas receiver needs off-load When, electric signal is fed back to vehicle VCU by gas storage barrel pressure pickup, and vehicle VCU sends electric signal control switching valve, so that pneumatics Gas circuit between the gas outlet of machine and the air inlet of accumulator is connected, the gas circuit between the gas outlet of air compressor machine and drier is closed Close, now, compressed air in air compressor machine is discharged into accumulator after converted valve, pressure accumulation circuit successively;It is described when accumulator unloads During lotus, the pressurized air in accumulator, which enters in air compressor machine, to be referred to:When accumulator needs off-load, accumulator pressure sensor is by electricity Signal feeds back to vehicle VCU, and vehicle VCU sends electric signal control by-passing valve and connected, and now, the pressurized air in accumulator is successively Enter after bypass line, by-passing valve in air compressor machine.
Compared with prior art, beneficial effects of the present invention are:
1st, due to the air inlet and pressure accumulation of air compressor machine in a kind of vehicle air compressor energy conserving system of the present invention and its control method One end gas circuit connection of device, the gas outlet of air compressor machine and the other end gas circuit of accumulator connect, when gas receiver off-load, air compressor machine Interior compressed air is discharged into accumulator, is collected the compressed air being discharged into during former off-load in air by accumulator, is reduced energy Waste, energy expenditure, be effectively improved capacity usage ratio;The compressed air supply air compressor machine that accumulator is collected, improves pneumatics The density of the induced air of machine, so as to improve pneumatics engine efficiency;The design improves capacity usage ratio, pneumatics engine efficiency passes through accumulator Realize so that design cost is low.Therefore, not only capacity usage ratio is high, cost is low by the present invention, and improves pneumatics engine efficiency.
2nd, due in a kind of vehicle air compressor energy conserving system of the present invention and its control method when accumulator off-load, accumulator Interior pressurized air enters in air compressor machine, realizes vehicle air compressor energy conserving system from super charge, improves admission pressure, solve because Natural inflow produces negative pressure and causes air compressor machine to alter the problem of oil mass is big, significantly reduces and alters oil mass, saves the energy, improves braking system System reliability.Therefore, present invention reduces air compressor machine to alter oil mass, saves the energy, improves brakes reliability.
3rd, because the air inlet of air compressor machine in a kind of vehicle air compressor energy conserving system of the present invention and its control method passes through successively It is connected after by-passing valve, bypass line with the gas outlet gas circuit of accumulator, the gas outlet of air compressor machine converted valve, pressure accumulation pipeline successively It is connected afterwards with the air inlet gas circuit of accumulator, the gas outlet of air compressor machine connects after converted valve, drier with gas receiver gas circuit successively Connect, gas storage barrel pressure pickup be provided with gas receiver, gas storage barrel pressure pickup is connected with vehicle VCU signals, vehicle VCU with Valve signal connection is changed, switching valve is controlled by vehicle VCU, the compressed air in air compressor machine is entered gas receiver or accumulator, Such design does not influence system work not only, and system can be realized from super charge.Therefore, the present invention do not influence not only be System work, and system can be realized from super charge.
4th, due in a kind of vehicle air compressor energy conserving system of the present invention and its control method by-passing valve be pneumatic diaphragm spring Valve or automatically controlled butterfly valve, pneumatic diaphragm spring valve, automatically controlled butterfly valve can precisely be switched on or off bypass line, and such design is not only The automation of by-passing valve control is realized, and improves the precision of system work.Therefore, not only automaticity of the invention Height, and the precision that works is high.
5th, because the air inlet of air compressor machine in a kind of vehicle air compressor energy conserving system of the present invention and its control method is through unidirectional It is connected after valve with the gas outlet of engine, the equal gas circuit in gas outlet of air cleaner, when pressurized air enters pneumatics in accumulator During machine, check valve can guarantee that pressurized air can only enter air compressor machine, will not flow backwards air inlet cleaner and engine, improve The reliability of system work.Therefore, the present invention improves the reliability of system work.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention(By-passing valve is pneumatic diaphragm spring valve).
Fig. 2 is the structural representation of the present invention(By-passing valve is automatically controlled butterfly valve).
In figure:Engine 1, air cleaner 2, air compressor machine 3, drier 4, gas receiver 5, accumulator 6, switching valve 7, pressure accumulation Pipeline 8, gas storage barrel pressure pickup 9, vehicle VCU10, bypass line 11, by-passing valve 12, check valve 13, accumulator pressure sensing Device 14.
Embodiment
Below in conjunction with brief description of the drawings, the present invention is further detailed explanation with embodiment.
Referring to Fig. 1 to Fig. 2, a kind of vehicle air compressor energy conserving system, including engine 1, air cleaner 2, air compressor machine 3, The air inlet of the air compressor machine 3 is connected with the equal gas circuit in gas outlet of the gas outlet of engine 1, air cleaner 2, air compressor machine 3 Gas outlet is connected after drier 4 with the gas circuit of gas receiver 5, and the air inlet of the air compressor machine 3 connects with one end gas circuit of accumulator 6 Connect, the gas outlet of air compressor machine 3 is connected with the other end gas circuit of accumulator 6.
Gas outlet gas circuit of the air inlet of the air compressor machine 3 successively with accumulator 6 after by-passing valve 12, bypass line 11 connects Connect, the gas outlet of air compressor machine 3 is connected after converted valve 7, pressure accumulation pipeline 8 with the air inlet gas circuit of accumulator 6 successively, air compressor machine 3 Gas outlet be connected successively with the gas circuit of gas receiver 5 after converted valve 7, drier 4, the switching valve 7 is two position three-way valve.
Gas storage barrel pressure pickup 9, gas storage barrel pressure pickup 9 and vehicle VCU10 signals are provided with the gas receiver 5 Connection, vehicle VCU10 are connected with the signal of switching valve 7.
The by-passing valve 12 is pneumatic diaphragm spring valve.
The by-passing valve 12 is automatically controlled butterfly valve, and the control terminal of by-passing valve 12 is connected with vehicle VCU10 signals, vehicle VCU10 It is connected with the signal of accumulator pressure sensor 14 being arranged on accumulator 6.
The accumulator pressure sensor 14 and gas storage barrel pressure pickup 9 are semiconductor piezoresistor type pressure sensing Device.
Gas outlet, the gas outlet of air cleaner 2 of the air inlet of the air compressor machine 3 after check valve 13 with engine 1 Equal gas circuit connection.
A kind of control method of vehicle air compressor energy conserving system, the control method comprise the following steps:
When engine 1 drives the descent of piston of air compressor machine 3:Air enters in air compressor machine 3 after air cleaner 2;
When engine 1 drives the piston stroking upward of air compressor machine 3:Compressed air in air compressor machine 3 enters storage after drier 4 In inflator 5;
When 5 off-load of gas receiver:Compressed air in air compressor machine 3 is discharged into accumulator 6;
When 6 off-load of accumulator:Pressurized air in accumulator 6 enters in air compressor machine 3.
Gas outlet gas circuit of the air inlet of the air compressor machine 3 successively with accumulator 6 after by-passing valve 12, bypass line 11 connects Connect, the gas outlet of air compressor machine 3 is connected after converted valve 7, pressure accumulation pipeline 8 with the air inlet gas circuit of accumulator 6 successively, air compressor machine 3 Gas outlet be connected successively with the gas circuit of gas receiver 5 after converted valve 7, drier 4, the switching valve 7 is two position three-way valve;It is described Gas storage barrel pressure pickup 9 is provided with gas receiver 5, gas storage barrel pressure pickup 9 is connected with vehicle VCU10 signals, vehicle VCU10 is connected with the signal of switching valve 7;The by-passing valve 12 is pneumatic diaphragm spring valve;
It is described when 5 off-load of gas receiver, the compressed air in air compressor machine 3, which is discharged into accumulator 6, to be referred to:When gas receiver 5 needs During off-load, electric signal is fed back to vehicle VCU10 by gas storage barrel pressure pickup 9, and vehicle VCU10 sends electric signal control switching valve 7, so that gas circuit connection, the gas outlet of air compressor machine 3 and drier 4 between the air inlet of the gas outlet of air compressor machine 3 and accumulator 6 Between gas circuit close, now, compressed air in air compressor machine 3 is discharged into accumulator 6 after converted valve 7, pressure accumulation circuit 8 successively It is interior;It is described when 6 off-load of accumulator, pressurized air in accumulator 6 enters in air compressor machine 3 and referred to:When accumulator 6 needs off-load When, the pressurized air in accumulator 6 controls by-passing valve 12 to connect by bypass line 11, now, the pressurized air in accumulator 6 Enter successively after bypass line 11, by-passing valve 12 in air compressor machine 3.
Gas outlet gas circuit of the air inlet of the air compressor machine 3 successively with accumulator 6 after by-passing valve 12, bypass line 11 connects Connect, the gas outlet of air compressor machine 3 is connected after converted valve 7, pressure accumulation pipeline 8 with the air inlet gas circuit of accumulator 6 successively, air compressor machine 3 Gas outlet be connected successively with the gas circuit of gas receiver 5 after converted valve 7, drier 4, the switching valve 7 is two position three-way valve;It is described Gas storage barrel pressure pickup 9 is provided with gas receiver 5, gas storage barrel pressure pickup 9 is connected with vehicle VCU10 signals, vehicle VCU10 is connected with the signal of switching valve 7;The by-passing valve 12 is automatically controlled butterfly valve, control terminal and the vehicle VCU10 signals of by-passing valve 12 Connection, vehicle VCU10 are connected with the signal of accumulator pressure sensor 14 being arranged on accumulator 6;
It is described when 5 off-load of gas receiver, the compressed air in air compressor machine 3, which is discharged into accumulator 6, to be referred to:When gas receiver 5 needs During off-load, electric signal is fed back to vehicle VCU10 by gas storage barrel pressure pickup 9, and vehicle VCU10 sends electric signal control switching valve 7, so that gas circuit connection, the gas outlet of air compressor machine 3 and drier 4 between the air inlet of the gas outlet of air compressor machine 3 and accumulator 6 Between gas circuit close, now, compressed air in air compressor machine 3 is discharged into accumulator 6 after converted valve 7, pressure accumulation circuit 8 successively It is interior;It is described when 6 off-load of accumulator, pressurized air in accumulator 6 enters in air compressor machine 3 and referred to:When accumulator 6 needs off-load When, electric signal is fed back to vehicle VCU10 by accumulator pressure sensor 14, and vehicle VCU10 sends electric signal control by-passing valve 12 Connect, now, the pressurized air in accumulator 6 enters in air compressor machine 3 after bypass line 11, by-passing valve 12 successively.
The principle of the present invention is described as follows:
1st, referring to Fig. 1 to Fig. 2, a kind of vehicle air compressor energy conserving system, including engine 1, air cleaner 2, air compressor machine 3, gas outlet after check valve 13 with engine 1 of the air inlet of the air compressor machine 3, the equal gas circuit in the gas outlet of air cleaner 2 Connection, the air inlet of air compressor machine 3 are connected after by-passing valve 12, bypass line 11 with the gas outlet gas circuit of accumulator 6 successively, pneumatics The gas outlet of machine 3 is connected after converted valve 7, pressure accumulation pipeline 8 with the air inlet gas circuit of accumulator 6 successively, the gas outlet of air compressor machine 3 It is connected successively after converted valve 7, drier 4 with the gas circuit of gas receiver 5, the switching valve 7 is two position three-way valve, the gas receiver 5 On be provided with gas storage barrel pressure pickup 9, gas storage barrel pressure pickup 9 is connected with vehicle VCU10 signals, vehicle VCU10 with turn Change the connection of the signal of valve 7;During work, air compressor machine 3 is moved reciprocatingly by the driving of engine 1, empty when the descent of piston of air compressor machine 3 Press 3 is in air-suction state, and the air after air cleaner 2 enters in the cylinder of air compressor machine 3, when the piston stroking upward of air compressor machine 3 When, the air in the cylinder of air compressor machine 3 is compressed, and air compressor machine 3 is in exhaust condition, and compressed air enters gas storage after drier 4 In cylinder 5;Air compressor machine 3 is inflated to gas receiver 5, and when the pressure of gas receiver 5 reaches setting value, gas storage barrel pressure pickup 9 is by electricity Signal feeds back to vehicle VCU10, and vehicle VCU10 sends electric signal control switching valve 7, so that the gas outlet of air compressor machine 3 and pressure accumulation Gas circuit between the air inlet of device 6 is connected, the gas circuit between the gas outlet of air compressor machine 3 and drier 4 is closed, now, air compressor machine 3 Interior compressed air is discharged into accumulator 6 after converted valve 7, pressure accumulation circuit 8 successively, and air compressor machine 3 supplies to accumulator 6, makes sky The compressed-air-storing of air is discharged into during 3 off-load of press in accumulator 6, saves energy consumption;When the air pressure of accumulator 6 reaches When setting pressure, by-passing valve 12 is connected, and the pressurized air in accumulator 6 enters sky after bypass line 11, by-passing valve 12 successively In press 3, due to gas outlet of the air inlet after check valve 13 with engine 1 of air compressor machine 3, the gas outlet of air cleaner 2 Equal gas circuit connection, check valve 13 ensure that the pressurized air from accumulator 6 can only enter the air inlet of air compressor machine 3, will not flow backwards Into engine 1 and air cleaner 2, so as to realize that vehicle air compressor energy conserving system alters oil mass from super charge, reduction, improve Intake efficiency, realize energy-saving;When the air pressure of accumulator 6 not up to sets pressure, by-passing valve 12 is closed, air compressor machine 3 natural inflows, do not influence work;After brakes work gas, when the pressure of gas receiver 5 is less than setting value, vehicle VCU10 Electric signal control switching valve 7 is sent, so that the gas circuit between the air inlet of the gas outlet of air compressor machine 3 and accumulator 6 is closed, pneumatics Gas circuit between the gas outlet of machine 3 and drier 4 is connected, and air compressor machine 3 starts to supply to gas receiver 5 again.
Existing vehicle air compressor air inlet system and exhaust system, air compressor load factor survey are usually no more than 25%, most of the time category off-load work Condition, this part power consumption, energy waste, meanwhile, air compressor air intake is natural inflow in existing system, in air compressor machine cylinder It is interior to produce negative pressure, cause to alter on air compressor lubricating oil, oil mass is altered in increase, causes consumption of lubricating oil high, air compressor air intake efficiency It is low.And the design collects the air that air is discharged into during 3 off-load of air compressor machine by accumulator 6, energy dissipation is reduced;Meanwhile utilize The pressure accumulation air of accumulator 6, the air inlet of air compressor machine 3 is resupplied, realize that air compressor system from super charge, effectively lifts air compressor machine and entered Gas efficiency, reduce air compressor machine and alter oil mass, reduce oil consumption, and improve brakes reliability.
2nd, referring to Fig. 1, the air inlet of the air compressor machine 3 goes out after by-passing valve 12, bypass line 11 with accumulator 6 successively Gas port gas circuit is connected, specifically, the by-passing valve 12 is pneumatic diaphragm spring valve, the control terminal of the pneumatic diaphragm spring valve is led to Cross bypass line 11 with accumulator 6 to be connected, the pneumatic diaphragm spring valve is driven by the pressure accumulation air pressure in accumulator 6 It is dynamic;During work, when the air pressure of accumulator 6, which reaches internal combustion engine, sets pressure, pressure accumulation air is controlled by bypass line 11 Pneumatic diaphragm spring valve is opened, and pressure accumulation air enters air compressor machine 3 after bypass line 11, check valve 13 is provided with system, is protected Pressurized air of the card from accumulator 6 can only enter the air inlet of air compressor machine 3, will not flow backwards into engine 1 and air cleaner 2, so as to realize that vehicle air compressor energy conserving system alters oil mass from super charge, reduction, intake efficiency is improved, is realized energy-saving; When the air pressure of accumulator 6, which is not up to internal combustion engine, sets pressure, by-passing valve 12 is closed mode, the natural inflow of air compressor machine 3, Do not influence work.
3rd, referring to Fig. 2, the air inlet of the air compressor machine 3 goes out after by-passing valve 12, bypass line 11 with accumulator 6 successively Gas port gas circuit connects, specifically, the by-passing valve 12 is automatically controlled butterfly valve, control terminal and the vehicle VCU10 signals of by-passing valve 12 connect Connect, vehicle VCU10 is connected with the signal of accumulator pressure sensor 14 being arranged on accumulator 6, the accumulator pressure sensing Device 14 is semiconductor piezo-resistive pressure sensor;Accumulator pressure sensor 14 detects the pressure change of accumulator 6, so After be converted into signal voltage and deliver to vehicle VCU10;During work, accumulator pressure sensor 14 arrives the pressure feedback of accumulator 6 Vehicle VCU10, when pressure reaches setting demand, vehicle VCU10 sends electric signal control by-passing valve 12 and connected, pressure accumulation air warp Enter air compressor machine 3 after bypass line 11, be provided with check valve 13 in system, ensure that the pressurized air from accumulator 6 can only enter Enter the air inlet of air compressor machine 3, will not flow backwards into engine 1 and air cleaner 2, so as to realize vehicle air compressor energy conserving system certainly Oil mass is altered in super charge, reduction, is improved intake efficiency, is realized energy-saving;When the air pressure of accumulator 6 not up to sets pressure During power, by-passing valve 12 is closed, and the natural inflow of air compressor machine 3, does not influence work.
Embodiment 1:
Referring to Fig. 1 to Fig. 2, a kind of vehicle air compressor energy conserving system, including engine 1, air cleaner 2, air compressor machine 3, The air inlet of the air compressor machine 3 is connected with the equal gas circuit in gas outlet of the gas outlet of engine 1, air cleaner 2, air compressor machine 3 Gas outlet is connected after drier 4 with the gas circuit of gas receiver 5, and the air inlet of the air compressor machine 3 connects with one end gas circuit of accumulator 6 Connect, the gas outlet of air compressor machine 3 is connected with the other end gas circuit of accumulator 6.
By such scheme, a kind of control method of vehicle air compressor energy conserving system, the control method comprises the following steps: When engine 1 drives the descent of piston of air compressor machine 3:Air enters in air compressor machine 3 after air cleaner 2;When engine 1 drives During the piston stroking upward of dynamic air compressor machine 3:Compressed air in air compressor machine 3 enters in gas receiver 5 after drier 4;When gas receiver 5 unloads During lotus:Compressed air in air compressor machine 3 is discharged into accumulator 6;When 6 off-load of accumulator:Pressurized air in accumulator 6 enters In air compressor machine 3.
Embodiment 2:
With embodiment 1, difference is substance:
Referring to Fig. 1 to Fig. 2, gas outlet after check valve 13 with engine 1 of the air inlet of the air compressor machine 3, air filter The equal gas circuit connection in gas outlet of clear device 2.
Embodiment 3:
With embodiment 1, difference is substance:
Referring to Fig. 1, the air inlet of the air compressor machine 3 outlet after by-passing valve 12, bypass line 11 with accumulator 6 successively Implication road is connected, and the gas outlet of air compressor machine 3 is connected after converted valve 7, pressure accumulation pipeline 8 with the air inlet gas circuit of accumulator 6 successively, The gas outlet of air compressor machine 3 is connected after converted valve 7, drier 4 with the gas circuit of gas receiver 5 successively, and the switching valve 7 is two-position three way Valve;Gas storage barrel pressure pickup 9 is provided with the gas receiver 5, gas storage barrel pressure pickup 9 is connected with vehicle VCU10 signals, Vehicle VCU10 is connected with the signal of switching valve 7;The by-passing valve 12 is pneumatic diaphragm spring valve;The accumulator pressure sensor 14 and gas storage barrel pressure pickup 9 are semiconductor piezo-resistive pressure sensor;The air inlet of the air compressor machine 3 is through unidirectional It is connected after valve 13 with the gas outlet of engine 1, the equal gas circuit in gas outlet of air cleaner 2;
It is described when 5 off-load of gas receiver, the compressed air in air compressor machine 3, which is discharged into accumulator 6, to be referred to:When gas receiver 5 needs During off-load, electric signal is fed back to vehicle VCU10 by gas storage barrel pressure pickup 9, and vehicle VCU10 sends electric signal control switching valve 7, so that gas circuit connection, the gas outlet of air compressor machine 3 and drier 4 between the air inlet of the gas outlet of air compressor machine 3 and accumulator 6 Between gas circuit close, now, compressed air in air compressor machine 3 is discharged into accumulator 6 after converted valve 7, pressure accumulation circuit 8 successively It is interior;It is described when 6 off-load of accumulator, pressurized air in accumulator 6 enters in air compressor machine 3 and referred to:When accumulator 6 needs off-load When, the pressurized air in accumulator 6 controls by-passing valve 12 to connect by bypass line 11, now, the pressurized air in accumulator 6 Enter successively after bypass line 11, by-passing valve 12 in air compressor machine 3.
Embodiment 4:
With embodiment 1, difference is substance:
Referring to Fig. 2, the air inlet of the air compressor machine 3 outlet after by-passing valve 12, bypass line 11 with accumulator 6 successively Implication road is connected, and the gas outlet of air compressor machine 3 is connected after converted valve 7, pressure accumulation pipeline 8 with the air inlet gas circuit of accumulator 6 successively, The gas outlet of air compressor machine 3 is connected after converted valve 7, drier 4 with the gas circuit of gas receiver 5 successively, and the switching valve 7 is two-position three way Valve;Gas storage barrel pressure pickup 9 is provided with the gas receiver 5, gas storage barrel pressure pickup 9 is connected with vehicle VCU10 signals, Vehicle VCU10 is connected with the signal of switching valve 7;The by-passing valve 12 is automatically controlled butterfly valve, control terminal and the vehicle VCU10 of by-passing valve 12 Signal is connected, and vehicle VCU10 is connected with the signal of accumulator pressure sensor 14 being arranged on accumulator 6;The accumulator pressure Force snesor 14 and gas storage barrel pressure pickup 9 are semiconductor piezo-resistive pressure sensor;The air inlet of the air compressor machine 3 Gas outlet, the equal gas circuit in the gas outlet of air cleaner 2 mouthful after check valve 13 with engine 1 are connected;
It is described when 5 off-load of gas receiver, the compressed air in air compressor machine 3, which is discharged into accumulator 6, to be referred to:When gas receiver 5 needs During off-load, electric signal is fed back to vehicle VCU10 by gas storage barrel pressure pickup 9, and vehicle VCU10 sends electric signal control switching valve 7, so that gas circuit connection, the gas outlet of air compressor machine 3 and drier 4 between the air inlet of the gas outlet of air compressor machine 3 and accumulator 6 Between gas circuit close, now, compressed air in air compressor machine 3 is discharged into accumulator 6 after converted valve 7, pressure accumulation circuit 8 successively It is interior;It is described when 6 off-load of accumulator, pressurized air in accumulator 6 enters in air compressor machine 3 and referred to:When accumulator 6 needs off-load When, electric signal is fed back to vehicle VCU10 by accumulator pressure sensor 14, and vehicle VCU10 sends electric signal control by-passing valve 12 Connect, now, the pressurized air in accumulator 6 enters in air compressor machine 3 after bypass line 11, by-passing valve 12 successively.

Claims (5)

1. a kind of control method of vehicle air compressor energy conserving system, the vehicle air compressor energy conserving system include engine(1), it is empty Air cleaner(2), air compressor machine(3), the air compressor machine(3)Air inlet and engine(1)Gas outlet, air cleaner(2) Gas outlet equal gas circuit connection, air compressor machine(3)Gas outlet through drier(4)Afterwards with gas receiver(5)Gas circuit connects, the pneumatics Machine(3)Air inlet and accumulator(6)The connection of one end gas circuit, air compressor machine(3)Gas outlet and accumulator(6)Other end gas Road connects, it is characterised in that:The control method comprises the following steps:
Work as engine(1)Drive air compressor machine(3)Descent of piston when:Air is through air cleaner(2)Enter air compressor machine afterwards(3) It is interior;
Work as engine(1)Drive air compressor machine(3)Piston stroking upward when:Air compressor machine(3)Interior compressed air is through drier(4)It is laggard Enter gas receiver(5)In;
Work as gas receiver(5)During off-load:Air compressor machine(3)Interior compressed air is discharged into accumulator(6)It is interior;
Work as accumulator(6)During off-load:Accumulator(6)Interior pressurized air enters air compressor machine(3)It is interior.
A kind of 2. control method of vehicle air compressor energy conserving system according to claim 1, it is characterised in that:
The air compressor machine(3)Air inlet successively through by-passing valve(12), bypass line(11)Afterwards with accumulator(6)Outlet implication Road connects, air compressor machine(3)Gas outlet converted valve successively(7), pressure accumulation pipeline(8)Afterwards with accumulator(6)Air inlet gas circuit Connection, air compressor machine(3)Gas outlet converted valve successively(7), drier(4)Afterwards with gas receiver(5)Gas circuit connects, the conversion Valve(7)For two position three-way valve;The gas receiver(5)On be provided with gas storage barrel pressure pickup(9), gas storage barrel pressure pickup (9)With vehicle VCU(10)Signal connects, vehicle VCU(10)With switching valve(7)Signal connects;The by-passing valve(12)To be pneumatic Diaphragm spring valve;
It is described to work as gas receiver(5)During off-load, air compressor machine(3)Interior compressed air is discharged into accumulator(6)Inside refer to:Work as gas receiver (5)When needing off-load, gas storage barrel pressure pickup(9)Electric signal is fed back into vehicle VCU(10), vehicle VCU(10)Send telecommunications Number control switching valve(7), so that air compressor machine(3)Gas outlet and accumulator(6)Air inlet between gas circuit connect, air compressor machine (3)Gas outlet and drier(4)Between gas circuit close, now, air compressor machine(3)Interior compressed air converted valve successively (7), pressure accumulation circuit(8)After be discharged into accumulator(6)It is interior;It is described to work as accumulator(6)During off-load, accumulator(6)Interior pressurized air Into air compressor machine(3)Inside refer to:Work as accumulator(6)When needing off-load, accumulator(6)Interior pressurized air passes through bypass line(11) Control by-passing valve(12)Connect, now, accumulator(6)Interior pressurized air is successively through bypass line(11), by-passing valve(12)Afterwards Into air compressor machine(3)It is interior.
A kind of 3. control method of vehicle air compressor energy conserving system according to claim 1, it is characterised in that:
The air compressor machine(3)Air inlet successively through by-passing valve(12), bypass line(11)Afterwards with accumulator(6)Outlet implication Road connects, air compressor machine(3)Gas outlet converted valve successively(7), pressure accumulation pipeline(8)Afterwards with accumulator(6)Air inlet gas circuit Connection, air compressor machine(3)Gas outlet converted valve successively(7), drier(4)Afterwards with gas receiver(5)Gas circuit connects, the conversion Valve(7)For two position three-way valve;The gas receiver(5)On be provided with gas storage barrel pressure pickup(9), gas storage barrel pressure pickup (9)With vehicle VCU(10)Signal connects, vehicle VCU(10)With switching valve(7)Signal connects;The by-passing valve(12)To be automatically controlled Butterfly valve, by-passing valve(12)Control terminal and vehicle VCU(10)Signal connects, vehicle VCU(10)With being arranged at accumulator(6)On Accumulator pressure sensor(14)Signal connects;
It is described to work as gas receiver(5)During off-load, air compressor machine(3)Interior compressed air is discharged into accumulator(6)Inside refer to:Work as gas receiver (5)When needing off-load, gas storage barrel pressure pickup(9)Electric signal is fed back into vehicle VCU(10), vehicle VCU(10)Send telecommunications Number control switching valve(7), so that air compressor machine(3)Gas outlet and accumulator(6)Air inlet between gas circuit connect, air compressor machine (3)Gas outlet and drier(4)Between gas circuit close, now, air compressor machine(3)Interior compressed air converted valve successively (7), pressure accumulation circuit(8)After be discharged into accumulator(6)It is interior;It is described to work as accumulator(6)During off-load, accumulator(6)Interior pressurized air Into air compressor machine(3)Inside refer to:Work as accumulator(6)When needing off-load, accumulator pressure sensor(14)Electric signal is fed back to whole Car VCU(10), vehicle VCU(10)Send electric signal control by-passing valve(12)Connect, now, accumulator(6)Interior pressurized air Successively through bypass line(11), by-passing valve(12)Enter air compressor machine afterwards(3)It is interior.
A kind of 4. control method of vehicle air compressor energy conserving system according to claim 3, it is characterised in that:The pressure accumulation Device pressure sensor(14)With gas storage barrel pressure pickup(9)It is semiconductor piezo-resistive pressure sensor.
5. a kind of control method of vehicle air compressor energy conserving system according to any one in claim 1-4, its feature It is:The air compressor machine(3)Air inlet through check valve(13)Afterwards with engine(1)Gas outlet, air cleaner(2)Go out The equal gas circuit connection of gas port.
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