CN105604919A - Vehicle air compressor energy-saving system and control method thereof - Google Patents
Vehicle air compressor energy-saving system and control method thereof Download PDFInfo
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- CN105604919A CN105604919A CN201610138577.8A CN201610138577A CN105604919A CN 105604919 A CN105604919 A CN 105604919A CN 201610138577 A CN201610138577 A CN 201610138577A CN 105604919 A CN105604919 A CN 105604919A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE 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
- B60T13/00—Transmitting 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
- B60T13/10—Transmitting 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
- B60T13/24—Transmitting 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
- B60T13/26—Compressed-air systems
- B60T13/268—Compressed-air systems using accumulators or reservoirs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, 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
- F04B49/06—Control using electricity
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Abstract
A vehicle air compressor energy-saving system comprises an engine, an air filter and an air compressor. An air inlet of the air compressor is in gas circuit connection with an air outlet of the engine and an air outlet of the air filter, the air inlet of the air compressor passes through a bypass valve and a bypass pipeline in sequence and then is in gas circuit connection with an air outlet of a pressure accumulator, an air outlet of the air compressor passes through a changeover valve and a pressure accumulation pipeline in sequence and then is in gas circuit connection with an air inlet of the pressure accumulator, the air outlet of the air compressor passes through the changeover valve and a dryer in sequence and then is in gas circuit connection with an air cylinder, an air cylinder pressure sensor in signal connection with a VCU is arranged on the air cylinder, and the VCU is in signal connection with the changeover valve. In unloading of the air cylinder, compressed air in the air compressor passes through the changeover valve and a pressure accumulation circuit in sequence and then is discharged into the pressure accumulator; in unloading of the pressure accumulator, pressurized air in the pressure accumulator passes through the bypass pipeline and the bypass valve in sequence and then enters the air compressor. The vehicle air compressor energy-saving system is high in energy utilization rate and low in cost, and the efficiency of the air compressor is improved.
Description
Technical field
The present invention relates to air compressor system, relate in particular to a kind of vehicle air compressor energy conserving system and control method thereof, be mainly applicable to improve vehicle air compressor system capacity utilization rate.
Background technology
Vehicle air compressor is one of important accessory of Diesel engine, air compressor machine is mainly to provide compressed air for brakes, current existing automobile air compressor generally adopts reciprocating-piston air compressor machine, by the gear train of engine, the travelling gear of transmission air compressor machine, the piston of air compressor machine is moved reciprocatingly, for brakes is carried compressed air. Along with the requirement of car load comfortableness, economy improves day by day, brakes becomes increasingly complex, capacity demand to air compressor machine is also increasing, and as air suspension vehicle frame, air suspension driver's cabin etc., gas consumption increases, the use back pressure of air compressor machine is from original 0.8Mpa, be promoted to 1.25Mpa, the service condition of vehicle air compressor further worsens, and the oily problem of altering of air compressor machine becomes increasingly conspicuous, meanwhile, the consumption of air compressor machine annex merit also increases. Therefore, reduce air compressor machine power consumption, reduce air compressor machine and alter oil mass, can increasing combustion engine output work, improve oil consumption, reduce engine oil consumption, energy-conserving and environment-protective.
Chinese patent application publication No. is CN102729930A, Shen Qing Publication day be on October 17th, 2012 disclosure of the invention a kind of automobile air compressor energy-saving pressurized control system, comprise air compressor machine booster, charge air cooler, turbocharger, air compressor machine, air dryer and exhaust brake valve, described charge air cooler gas outlet is connected with motor intake manifold, enmgine exhaust is connected with exhaust brake valve, described exhaust brake valve is connected with air compressor air intake mouth through air tank, air compressor machine booster gas outlet connects the air inlet of air compressor machine, the natural inflow mouth of described air compressor machine booster connects air filter, another of charge air cooler branch road of giving vent to anger connects the super charge mouth of air compressor machine booster, described charge air cooler air inlet connects turbocharger gas outlet, one of described air compressor machine booster is controlled a mouthful air inlet for connection air dryer, another controls a mouthful air inlet that connects exhaust brake valve, exhaust brake valve is connected with air tank by a switch valve, air dryer gas outlet connects the air inlet of air tank. although the underinflated hidden danger of air compressor machine has been avoided in this invention, but still there is following defect in it: in this invention when air compressor machine off-load, compressed air is discharged to atmosphere, energy is wasted, meanwhile, for improving air compressor air intake efficiency, system is set up turbocharger, low, the bad response of engine power while making low speed, oil consumption increases, and then makes system cost higher.
Summary of the invention
The object of the invention is to overcome the capacity usage ratio existing in prior art low, the defect that cost is high and problem, provide a kind of capacity usage ratio high, vehicle air compressor energy conserving system and control method thereof that cost is low.
For realizing above object, technical solution of the present invention is: a kind of vehicle air compressor energy conserving system, comprise engine, air filter, air compressor machine, the air inlet of described air compressor machine is connected with the equal gas circuit in gas outlet of the gas outlet of engine, air filter, after the gas outlet drying device of air compressor machine, be connected with gas receiver gas circuit, the air inlet of described air compressor machine is connected with one end gas circuit of accumulator, and the gas outlet of air compressor machine is connected with the other end gas circuit of accumulator.
The air inlet of described air compressor machine is connected with the gas outlet gas circuit of accumulator successively after by-passing valve, bypass line, the gas outlet of air compressor machine is connected with the air inlet gas circuit of accumulator successively after switching valve, pressure accumulation pipeline, the gas outlet of air compressor machine is connected with gas receiver gas circuit successively after switching valve, drier, and described switching valve is two position three-way valve.
On described gas receiver, be provided with gas receiver pressure sensor, gas receiver pressure sensor is connected with car load VCU signal, and car load VCU is connected with switching valve signal.
Described by-passing valve is pneumatic diaphragm spring valve.
Described by-passing valve is automatically controlled butterfly valve, and the control end of by-passing valve is connected with car load VCU signal, and car load VCU is connected with the accumulator pressure sensor signal being arranged on accumulator.
Described accumulator pressure sensor and gas receiver pressure sensor are semiconductor piezo-resistive pressure sensor.
The air inlet of described air compressor machine is connected with the gas outlet of engine, the equal gas circuit in gas outlet of air filter after check valve.
A control method for vehicle air compressor energy conserving system, described control method comprises the following steps:
In the time of the descent of piston of motor driven air compressor machine: air enters in air compressor machine after air filter;
In the time of the piston stroking upward of motor driven air compressor machine: enter in gas receiver after the compressed air drying device in air compressor machine;
In the time of gas receiver off-load: the compressed air in air compressor machine enters in accumulator;
In the time of accumulator off-load: the pressurized air in accumulator enters in air compressor machine.
The air inlet of described air compressor machine is connected with the gas outlet gas circuit of accumulator successively after by-passing valve, bypass line, the gas outlet of air compressor machine is connected with the air inlet gas circuit of accumulator successively after switching valve, pressure accumulation pipeline, the gas outlet of air compressor machine is connected with gas receiver gas circuit successively after switching valve, drier, and described switching valve is two position three-way valve; On described gas receiver, be provided with gas receiver pressure sensor, gas receiver pressure sensor is connected with car load VCU signal, and car load VCU is connected with switching valve signal; Described by-passing valve is pneumatic diaphragm spring valve;
Described in the time of gas receiver off-load, compressed air in air compressor machine enters in accumulator and refers to: in the time that gas receiver needs off-load, the signal of telecommunication is fed back to car load VCU by gas receiver pressure sensor, car load VCU sends signal of telecommunication control switching valve, so that gas circuit between the gas outlet of air compressor machine and the air inlet of accumulator is connected, gas circuit between gas outlet and the drier of air compressor machine is closed, now, the compressed air in air compressor machine enters in accumulator successively after switching valve, pressure accumulation circuit; Described in the time of accumulator off-load, pressurized air in accumulator enters in air compressor machine and refers to: in the time that accumulator needs off-load, pressurized air in accumulator is connected by bypass line control by-passing valve, and now, the pressurized air in accumulator enters in air compressor machine successively after bypass line, by-passing valve.
The air inlet of described air compressor machine is connected with the gas outlet gas circuit of accumulator successively after by-passing valve, bypass line, the gas outlet of air compressor machine is connected with the air inlet gas circuit of accumulator successively after switching valve, pressure accumulation pipeline, the gas outlet of air compressor machine is connected with gas receiver gas circuit successively after switching valve, drier, and described switching valve is two position three-way valve; On described gas receiver, be provided with gas receiver pressure sensor, gas receiver pressure sensor is connected with car load VCU signal, and car load VCU is connected with switching valve signal; Described by-passing valve is automatically controlled butterfly valve, and the control end of by-passing valve is connected with car load VCU signal, and car load VCU is connected with the accumulator pressure sensor signal being arranged on accumulator;
Described in the time of gas receiver off-load, compressed air in air compressor machine enters in accumulator and refers to: in the time that gas receiver needs off-load, the signal of telecommunication is fed back to car load VCU by gas receiver pressure sensor, car load VCU sends signal of telecommunication control switching valve, so that gas circuit between the gas outlet of air compressor machine and the air inlet of accumulator is connected, gas circuit between gas outlet and the drier of air compressor machine is closed, now, the compressed air in air compressor machine enters in accumulator successively after switching valve, pressure accumulation circuit; Described in the time of accumulator off-load, pressurized air in accumulator enters in air compressor machine and refers to: in the time that accumulator needs off-load, the signal of telecommunication is fed back to car load VCU by accumulator pressure sensor, car load VCU sends signal of telecommunication control by-passing valve and connects, now, the pressurized air in accumulator enters in air compressor machine successively after bypass line, by-passing valve.
Compared with prior art, beneficial effect of the present invention is:
1, because the air inlet of air compressor machine and one end gas circuit of accumulator in a kind of vehicle air compressor energy conserving system of the present invention and control method thereof are connected, the gas outlet of air compressor machine is connected with the other end gas circuit of accumulator, in the time of gas receiver off-load, compressed air in air compressor machine enters in accumulator, while collecting former off-load by accumulator, enter the compressed air in atmosphere, reduce energy dissipation, energy consumption, effectively improved capacity usage ratio; The compressed air that accumulator is collected is supplied with air compressor machine, improves the density of the induced air of air compressor machine, thereby has improved air compressor machine efficiency; The design improves capacity usage ratio, air compressor machine efficiency all realizes by accumulator, makes design cost low. Therefore, not only capacity usage ratio is high in the present invention, cost is low, and has improved air compressor machine efficiency.
2, due in a kind of vehicle air compressor energy conserving system of the present invention and control method thereof when the accumulator off-load, pressurized air in accumulator enters in air compressor machine, realize vehicle air compressor energy conserving system from super charge, improve admission pressure, solving because natural inflow produces negative pressure causes air compressor machine to alter the problem that oil mass is large, significantly reduce and alter oil mass, save the energy, improved brakes reliability. Therefore, the present invention has reduced air compressor machine and has altered oil mass, saves the energy, has improved brakes reliability.
3, because the air inlet of air compressor machine in a kind of vehicle air compressor energy conserving system of the present invention and control method thereof is successively through by-passing valve, after bypass line, be connected with the gas outlet gas circuit of accumulator, the gas outlet of air compressor machine is successively through switching valve, after pressure accumulation pipeline, be connected with the air inlet gas circuit of accumulator, the gas outlet of air compressor machine is successively through switching valve, after drier, be connected with gas receiver gas circuit, on gas receiver, be provided with gas receiver pressure sensor, gas receiver pressure sensor is connected with car load VCU signal, car load VCU is connected with switching valve signal, control switching valve by car load VCU, make the compressed air in air compressor machine enter gas receiver or accumulator, such design does not only affect system works, and the system that can realize is from super charge. therefore, the present invention does not only affect system works, and the system that can realize is from super charge.
4, because by-passing valve in a kind of vehicle air compressor energy conserving system of the present invention and control method thereof is pneumatic diaphragm spring valve or automatically controlled butterfly valve, bypass line all can precisely be connected or close to pneumatic diaphragm spring valve, automatically controlled butterfly valve, such design not only realizes the automation of by-passing valve control, and has improved the precision of system works. Therefore, the present invention not only automaticity is high, and work precision is high.
5, because the air inlet of air compressor machine in a kind of vehicle air compressor energy conserving system of the present invention and control method thereof is connected with the gas outlet of engine, the equal gas circuit in gas outlet of air filter after check valve, in the time that in accumulator, pressurized air enters air compressor machine, check valve can ensure that pressurized air can only enter air compressor machine, can not flow backwards and enter air filter and engine, improve the reliability of system works. Therefore, the present invention has improved the reliability of system works.
Brief description of the drawings
Fig. 1 is structural representation of the present invention (by-passing valve is pneumatic diaphragm spring valve).
Fig. 2 is structural representation of the present invention (by-passing valve is automatically controlled butterfly valve).
In figure: engine 1, air filter 2, air compressor machine 3, drier 4, gas receiver 5, accumulator 6, switching valve 7, pressure accumulation pipeline 8, gas receiver pressure sensor 9, car load VCU10, bypass line 11, by-passing valve 12, check valve 13, accumulator pressure sensor 14.
Detailed description of the invention
Below in conjunction with brief description of the drawings and detailed description of the invention, the present invention is further detailed explanation.
Referring to Fig. 1 to Fig. 2, a kind of vehicle air compressor energy conserving system, comprise engine 1, air filter 2, air compressor machine 3, the air inlet of described air compressor machine 3 is connected with the gas outlet of engine 1, the equal gas circuit in gas outlet of air filter 2, after the gas outlet drying device 4 of air compressor machine 3, be connected with gas receiver 5 gas circuits, the air inlet of described air compressor machine 3 is connected with one end gas circuit of accumulator 6, and the gas outlet of air compressor machine 3 is connected with the other end gas circuit of accumulator 6.
The air inlet of described air compressor machine 3 is connected with the gas outlet gas circuit of accumulator 6 successively after by-passing valve 12, bypass line 11, the gas outlet of air compressor machine 3 is connected with the air inlet gas circuit of accumulator 6 successively after switching valve 7, pressure accumulation pipeline 8, the gas outlet of air compressor machine 3 is connected with gas receiver 5 gas circuits successively after switching valve 7, drier 4, and described switching valve 7 is two position three-way valve.
On described gas receiver 5, be provided with gas receiver pressure sensor 9, gas receiver pressure sensor 9 is connected with car load VCU10 signal, and car load VCU10 is connected with switching valve 7 signals.
Described by-passing valve 12 is pneumatic diaphragm spring valve.
Described by-passing valve 12 is automatically controlled butterfly valve, and the control end of by-passing valve 12 is connected with car load VCU10 signal, and car load VCU10 is connected with accumulator pressure sensor 14 signals that are arranged on accumulator 6.
Described accumulator pressure sensor 14 is semiconductor piezo-resistive pressure sensor with gas receiver pressure sensor 9.
The air inlet of described air compressor machine 3 is connected with the gas outlet of engine 1, the equal gas circuit in gas outlet of air filter 2 after check valve 13.
A control method for vehicle air compressor energy conserving system, described control method comprises the following steps:
In the time that engine 1 drives the descent of piston of air compressor machine 3: air enters in air compressor machine 3 after air filter 2;
In the time that engine 1 drives the piston stroking upward of air compressor machine 3: enter in gas receiver 5 after the compressed air drying device 4 in air compressor machine 3;
In the time of gas receiver 5 off-load: the compressed air in air compressor machine 3 enters in accumulator 6;
In the time of accumulator 6 off-load: the pressurized air in accumulator 6 enters in air compressor machine 3.
The air inlet of described air compressor machine 3 is connected with the gas outlet gas circuit of accumulator 6 successively after by-passing valve 12, bypass line 11, the gas outlet of air compressor machine 3 is connected with the air inlet gas circuit of accumulator 6 successively after switching valve 7, pressure accumulation pipeline 8, the gas outlet of air compressor machine 3 is connected with gas receiver 5 gas circuits successively after switching valve 7, drier 4, and described switching valve 7 is two position three-way valve; On described gas receiver 5, be provided with gas receiver pressure sensor 9, gas receiver pressure sensor 9 is connected with car load VCU10 signal, and car load VCU10 is connected with switching valve 7 signals; Described by-passing valve 12 is pneumatic diaphragm spring valve;
Described in the time of gas receiver 5 off-load, compressed air in air compressor machine 3 enters in accumulator 6 and refers to: in the time that gas receiver 5 needs off-load, the signal of telecommunication is fed back to car load VCU10 by gas receiver pressure sensor 9, car load VCU10 sends signal of telecommunication control switching valve 7, so that gas circuit between the gas outlet of air compressor machine 3 and the air inlet of accumulator 6 is connected, gas circuit between gas outlet and the drier 4 of air compressor machine 3 is closed, now, the compressed air in air compressor machine 3 enters in accumulator 6 successively after switching valve 7, pressure accumulation circuit 8; Described in the time of accumulator 6 off-load, pressurized air in accumulator 6 enters in air compressor machine 3 and refers to: in the time that accumulator 6 needs off-load, pressurized air in accumulator 6 is controlled by-passing valve 12 by bypass line 11 and is connected, now, the pressurized air in accumulator 6 enters in air compressor machine 3 successively after bypass line 11, by-passing valve 12.
The air inlet of described air compressor machine 3 is connected with the gas outlet gas circuit of accumulator 6 successively after by-passing valve 12, bypass line 11, the gas outlet of air compressor machine 3 is connected with the air inlet gas circuit of accumulator 6 successively after switching valve 7, pressure accumulation pipeline 8, the gas outlet of air compressor machine 3 is connected with gas receiver 5 gas circuits successively after switching valve 7, drier 4, and described switching valve 7 is two position three-way valve; On described gas receiver 5, be provided with gas receiver pressure sensor 9, gas receiver pressure sensor 9 is connected with car load VCU10 signal, and car load VCU10 is connected with switching valve 7 signals; Described by-passing valve 12 is automatically controlled butterfly valve, and the control end of by-passing valve 12 is connected with car load VCU10 signal, and car load VCU10 is connected with accumulator pressure sensor 14 signals that are arranged on accumulator 6;
Described in the time of gas receiver 5 off-load, compressed air in air compressor machine 3 enters in accumulator 6 and refers to: in the time that gas receiver 5 needs off-load, the signal of telecommunication is fed back to car load VCU10 by gas receiver pressure sensor 9, car load VCU10 sends signal of telecommunication control switching valve 7, so that gas circuit between the gas outlet of air compressor machine 3 and the air inlet of accumulator 6 is connected, gas circuit between gas outlet and the drier 4 of air compressor machine 3 is closed, now, the compressed air in air compressor machine 3 enters in accumulator 6 successively after switching valve 7, pressure accumulation circuit 8; Described in the time of accumulator 6 off-load, pressurized air in accumulator 6 enters in air compressor machine 3 and refers to: in the time that accumulator 6 needs off-load, the signal of telecommunication is fed back to car load VCU10 by accumulator pressure sensor 14, car load VCU10 sends signal of telecommunication control by-passing valve 12 and connects, now, the pressurized air in accumulator 6 enters in air compressor machine 3 successively after bypass line 11, by-passing valve 12.
Principle of the present invention is described as follows:
1, referring to Fig. 1 to Fig. 2, a kind of vehicle air compressor energy conserving system, comprise engine 1, air filter 2, air compressor machine 3, the air inlet of described air compressor machine 3 after check valve 13 with the gas outlet of engine 1, the equal gas circuit in gas outlet of air filter 2 connects, the air inlet of air compressor machine 3 is successively through by-passing valve 12, after bypass line 11, be connected with the gas outlet gas circuit of accumulator 6, the gas outlet of air compressor machine 3 is successively through switching valve 7, after pressure accumulation pipeline 8, be connected with the air inlet gas circuit of accumulator 6, the gas outlet of air compressor machine 3 is successively through switching valve 7, after drier 4, be connected with gas receiver 5 gas circuits, described switching valve 7 is two position three-way valve, on described gas receiver 5, be provided with gas receiver pressure sensor 9, gas receiver pressure sensor 9 is connected with car load VCU10 signal, car load VCU10 is connected with switching valve 7 signals, when work, air compressor machine 3 is driven and is moved reciprocatingly by engine 1, in the time of the descent of piston of air compressor machine 3, air compressor machine 3 is in air-suction state, air after air filter 2 enters in air compressor machine 3 cylinders, and in the time of the piston stroking upward of air compressor machine 3, the air in air compressor machine 3 cylinders is compressed, air compressor machine 3, in exhaust condition, enters in gas receiver 5 after compressed air drying device 4, air compressor machine 3 is inflated gas receiver 5, in the time that the pressure of gas receiver 5 reaches setting value, the signal of telecommunication is fed back to car load VCU10 by gas receiver pressure sensor 9, car load VCU10 sends signal of telecommunication control switching valve 7, so that the gas circuit between the gas outlet of air compressor machine 3 and the air inlet of accumulator 6 is connected, gas circuit between the gas outlet of air compressor machine 3 and drier 4 is closed, now, compressed air in air compressor machine 3 is successively through switching valve 7, after pressure accumulation circuit 8, enter in accumulator 6, air compressor machine 3 is to accumulator 6 air feed, while making air compressor machine 3 off-load, enter the compressed-air-storing of atmosphere in accumulator 6, save energy consumption, when the air pressure of accumulator 6 reaches when pressure is set, by-passing valve 12 is connected, pressurized air in accumulator 6 is successively through bypass line 11, after by-passing valve 12, enter in air compressor machine 3, due to the air inlet of air compressor machine 3 after check valve 13 with the gas outlet of engine 1, the equal gas circuit in gas outlet of air filter 2 connects, check valve 13 ensures can only enter from the pressurized air of accumulator 6 air inlet of air compressor machine 3, can not flow backwards and enter engine 1 and air filter 2, thereby realize vehicle air compressor energy conserving system from super charge, reduce and alter oil mass, improve intake efficiency, realize energy-saving and cost-reducing, when the air pressure of accumulator 6 does not reach when pressure is set, by-passing valve 12 cuts out, and air compressor machine 3 natural inflows, do not affect work, when after brakes work use gas, when the pressure of gas receiver 5 is less than setting value, car load VCU10 sends signal of telecommunication control switching valve 7, so that the gas circuit between the gas outlet of air compressor machine 3 and the air inlet of accumulator 6 is closed, gas circuit between gas outlet and the drier 4 of air compressor machine 3 is connected, air compressor machine 3 starts again to gas receiver 5 air feed.
Existing vehicle air compressor air inlet system and exhaust system, air compressor load factor survey is generally no more than 25%, most of the time belongs to off-load operating mode, and this part power consumption, energy have wasted, simultaneously, in existing system, air compressor air intake is natural inflow, in air compressor machine cylinder, can produce negative pressure, cause altering on air compressor lubricating oil, increase and alter oil mass, cause consumption of lubricating oil high, air compressor air intake efficiency is also low. And the design enters the air of atmosphere while collecting air compressor machine 3 off-load by accumulator 6, reduce energy dissipation; Meanwhile, utilize the pressure accumulation air of accumulator 6, resupply air compressor machine 3 air inlets, realize air compressor system from super charge, effectively promote air compressor air intake efficiency, reduce air compressor machine and alter oil mass, reduce oil consumption, and improve brakes reliability.
2, referring to Fig. 1, the air inlet of described air compressor machine 3 is connected with the gas outlet gas circuit of accumulator 6 successively after by-passing valve 12, bypass line 11, concrete, described by-passing valve 12 is pneumatic diaphragm spring valve, the control end of described pneumatic diaphragm spring valve is connected with accumulator 6 by bypass line 11, and described pneumatic diaphragm spring valve drives by the pressure accumulation air pressure in accumulator 6; When work, in the time that the air pressure of accumulator 6 reaches internal combustion engine pressure is set, pressure accumulation air is controlled pneumatic diaphragm spring valve by bypass line 11 and is opened, pressure accumulation air enters air compressor machine 3 after bypass line 11, in system, be provided with check valve 13, ensure can only enter air compressor machine 3 air inlets from the pressurized air of accumulator 6, can not flow backwards and enter engine 1 and air filter 2, thereby realize vehicle air compressor energy conserving system from super charge, reduce and alter oil mass, improve intake efficiency, realize energy-saving and cost-reducing; In the time that the air pressure of accumulator 6 does not reach internal combustion engine pressure is set, by-passing valve 12 is closed condition, and air compressor machine 3 natural inflows, do not affect work.
3, referring to Fig. 2, the air inlet of described air compressor machine 3 is connected with the gas outlet gas circuit of accumulator 6 successively after by-passing valve 12, bypass line 11, concrete, described by-passing valve 12 is automatically controlled butterfly valve, the control end of by-passing valve 12 is connected with car load VCU10 signal, car load VCU10 is connected with accumulator pressure sensor 14 signals that are arranged on accumulator 6, and described accumulator pressure sensor 14 is semiconductor piezo-resistive pressure sensor; The pressure that accumulator pressure sensor 14 detects accumulator 6 changes, and then converts signal voltage to and delivers to car load VCU10; When work, the pressure feedback of accumulator 6 is arrived car load VCU10 by accumulator pressure sensor 14, when pressure reaches when demand is set, car load VCU10 sends signal of telecommunication control by-passing valve 12 and connects, pressure accumulation air enters air compressor machine 3 after bypass line 11, in system, be provided with check valve 13, ensure can only enter air compressor machine 3 air inlets from the pressurized air of accumulator 6, can not flow backwards and enter engine 1 and air filter 2, thereby realize vehicle air compressor energy conserving system from super charge, reduce and alter oil mass, improve intake efficiency, realize energy-saving and cost-reducing; When the air pressure of accumulator 6 does not reach when pressure is set, by-passing valve 12 cuts out, and air compressor machine 3 natural inflows, do not affect work.
Embodiment 1:
Referring to Fig. 1 to Fig. 2, a kind of vehicle air compressor energy conserving system, comprise engine 1, air filter 2, air compressor machine 3, the air inlet of described air compressor machine 3 is connected with the gas outlet of engine 1, the equal gas circuit in gas outlet of air filter 2, after the gas outlet drying device 4 of air compressor machine 3, be connected with gas receiver 5 gas circuits, the air inlet of described air compressor machine 3 is connected with one end gas circuit of accumulator 6, and the gas outlet of air compressor machine 3 is connected with the other end gas circuit of accumulator 6.
Press such scheme, a kind of control method of vehicle air compressor energy conserving system, described control method comprises the following steps: in the time that engine 1 drives the descent of piston of air compressor machine 3: air enters in air compressor machine 3 after air filter 2; In the time that engine 1 drives the piston stroking upward of air compressor machine 3: enter in gas receiver 5 after the compressed air drying device 4 in air compressor machine 3; In the time of gas receiver 5 off-load: the compressed air in air compressor machine 3 enters in accumulator 6; In the time of accumulator 6 off-load: the pressurized air in accumulator 6 enters in air compressor machine 3.
Embodiment 2:
Substance is with embodiment 1, and difference is:
Referring to Fig. 1 to Fig. 2, the air inlet of described air compressor machine 3 is connected with the gas outlet of engine 1, the equal gas circuit in gas outlet of air filter 2 after check valve 13.
Embodiment 3:
Substance is with embodiment 1, and difference is:
Referring to Fig. 1, the air inlet of described air compressor machine 3 is connected with the gas outlet gas circuit of accumulator 6 successively after by-passing valve 12, bypass line 11, the gas outlet of air compressor machine 3 is connected with the air inlet gas circuit of accumulator 6 successively after switching valve 7, pressure accumulation pipeline 8, the gas outlet of air compressor machine 3 is connected with gas receiver 5 gas circuits successively after switching valve 7, drier 4, and described switching valve 7 is two position three-way valve; On described gas receiver 5, be provided with gas receiver pressure sensor 9, gas receiver pressure sensor 9 is connected with car load VCU10 signal, and car load VCU10 is connected with switching valve 7 signals; Described by-passing valve 12 is pneumatic diaphragm spring valve; Described accumulator pressure sensor 14 is semiconductor piezo-resistive pressure sensor with gas receiver pressure sensor 9; The air inlet of described air compressor machine 3 is connected with the gas outlet of engine 1, the equal gas circuit in gas outlet of air filter 2 after check valve 13;
Described in the time of gas receiver 5 off-load, compressed air in air compressor machine 3 enters in accumulator 6 and refers to: in the time that gas receiver 5 needs off-load, the signal of telecommunication is fed back to car load VCU10 by gas receiver pressure sensor 9, car load VCU10 sends signal of telecommunication control switching valve 7, so that gas circuit between the gas outlet of air compressor machine 3 and the air inlet of accumulator 6 is connected, gas circuit between gas outlet and the drier 4 of air compressor machine 3 is closed, now, the compressed air in air compressor machine 3 enters in accumulator 6 successively after switching valve 7, pressure accumulation circuit 8; Described in the time of accumulator 6 off-load, pressurized air in accumulator 6 enters in air compressor machine 3 and refers to: in the time that accumulator 6 needs off-load, pressurized air in accumulator 6 is controlled by-passing valve 12 by bypass line 11 and is connected, now, the pressurized air in accumulator 6 enters in air compressor machine 3 successively after bypass line 11, by-passing valve 12.
Embodiment 4:
Substance is with embodiment 1, and difference is:
Referring to Fig. 2, the air inlet of described air compressor machine 3 is connected with the gas outlet gas circuit of accumulator 6 successively after by-passing valve 12, bypass line 11, the gas outlet of air compressor machine 3 is connected with the air inlet gas circuit of accumulator 6 successively after switching valve 7, pressure accumulation pipeline 8, the gas outlet of air compressor machine 3 is connected with gas receiver 5 gas circuits successively after switching valve 7, drier 4, and described switching valve 7 is two position three-way valve; On described gas receiver 5, be provided with gas receiver pressure sensor 9, gas receiver pressure sensor 9 is connected with car load VCU10 signal, and car load VCU10 is connected with switching valve 7 signals; Described by-passing valve 12 is automatically controlled butterfly valve, and the control end of by-passing valve 12 is connected with car load VCU10 signal, and car load VCU10 is connected with accumulator pressure sensor 14 signals that are arranged on accumulator 6; Described accumulator pressure sensor 14 is semiconductor piezo-resistive pressure sensor with gas receiver pressure sensor 9; The air inlet of described air compressor machine 3 is connected with the gas outlet of engine 1, the equal gas circuit in gas outlet of air filter 2 after check valve 13;
Described in the time of gas receiver 5 off-load, compressed air in air compressor machine 3 enters in accumulator 6 and refers to: in the time that gas receiver 5 needs off-load, the signal of telecommunication is fed back to car load VCU10 by gas receiver pressure sensor 9, car load VCU10 sends signal of telecommunication control switching valve 7, so that gas circuit between the gas outlet of air compressor machine 3 and the air inlet of accumulator 6 is connected, gas circuit between gas outlet and the drier 4 of air compressor machine 3 is closed, now, the compressed air in air compressor machine 3 enters in accumulator 6 successively after switching valve 7, pressure accumulation circuit 8; Described in the time of accumulator 6 off-load, pressurized air in accumulator 6 enters in air compressor machine 3 and refers to: in the time that accumulator 6 needs off-load, the signal of telecommunication is fed back to car load VCU10 by accumulator pressure sensor 14, car load VCU10 sends signal of telecommunication control by-passing valve 12 and connects, now, the pressurized air in accumulator 6 enters in air compressor machine 3 successively after bypass line 11, by-passing valve 12.
Claims (10)
1. a vehicle air compressor energy conserving system, comprise engine (1), air filter (2), air compressor machine (3), the air inlet of described air compressor machine (3) is connected with the equal gas circuit in gas outlet of the gas outlet of engine (1), air filter (2), after the gas outlet drying device (4) of air compressor machine (3), be connected with gas receiver (5) gas circuit, it is characterized in that: the air inlet of described air compressor machine (3) is connected with one end gas circuit of accumulator (6), the gas outlet of air compressor machine (3) is connected with the other end gas circuit of accumulator (6).
2. a kind of vehicle air compressor energy conserving system according to claim 1, it is characterized in that: the air inlet of described air compressor machine (3) is connected with the gas outlet gas circuit of accumulator (6) successively after by-passing valve (12), bypass line (11), the gas outlet of air compressor machine (3) is connected with the air inlet gas circuit of accumulator (6) successively after switching valve (7), pressure accumulation pipeline (8), the gas outlet of air compressor machine (3) is connected with gas receiver (5) gas circuit successively after switching valve (7), drier (4), and described switching valve (7) is two position three-way valve.
3. a kind of vehicle air compressor energy conserving system according to claim 2, it is characterized in that: on described gas receiver (5), be provided with gas receiver pressure sensor (9), gas receiver pressure sensor (9) and car load VCU(10) signal is connected, car load VCU(10) be connected with switching valve (7) signal.
4. a kind of vehicle air compressor energy conserving system according to claim 3, is characterized in that: described by-passing valve (12) is pneumatic diaphragm spring valve.
5. a kind of vehicle air compressor energy conserving system according to claim 3, it is characterized in that: described by-passing valve (12) is automatically controlled butterfly valve, the control end of by-passing valve (12) and car load VCU(10) signal is connected, car load VCU(10) be connected with accumulator pressure sensor (14) signal being arranged on accumulator (6).
6. a kind of vehicle air compressor energy conserving system according to claim 5, is characterized in that: described accumulator pressure sensor (14) is semiconductor piezo-resistive pressure sensor with gas receiver pressure sensor (9).
7. according to a kind of vehicle air compressor energy conserving system described in any one in claim 1 – 6, it is characterized in that: the air inlet of described air compressor machine (3) is connected with the gas outlet of engine (1), the equal gas circuit in gas outlet of air filter (2) after check valve (13).
8. a control method for vehicle air compressor energy conserving system claimed in claim 1, is characterized in that: described control method comprises the following steps:
In the time that engine (1) drives the descent of piston of air compressor machine (3): air enters in air compressor machine (3) after air filter (2);
In the time that engine (1) drives the piston stroking upward of air compressor machine (3): enter in gas receiver (5) after the compressed air drying device (4) in air compressor machine (3);
In the time of gas receiver (5) off-load: the compressed air in air compressor machine (3) enters in accumulator (6);
In the time of accumulator (6) off-load: the pressurized air in accumulator (6) enters in air compressor machine (3).
9. the control method of a kind of vehicle air compressor energy conserving system according to claim 8, is characterized in that:
The air inlet of described air compressor machine (3) is connected with the gas outlet gas circuit of accumulator (6) successively after by-passing valve (12), bypass line (11), the gas outlet of air compressor machine (3) is connected with the air inlet gas circuit of accumulator (6) successively after switching valve (7), pressure accumulation pipeline (8), the gas outlet of air compressor machine (3) is connected with gas receiver (5) gas circuit successively after switching valve (7), drier (4), and described switching valve (7) is two position three-way valve; On described gas receiver (5), be provided with gas receiver pressure sensor (9), gas receiver pressure sensor (9) and car load VCU(10) signal is connected, car load VCU(10) be connected with switching valve (7) signal; Described by-passing valve (12) is pneumatic diaphragm spring valve;
Described in the time of gas receiver (5) off-load, compressed air in air compressor machine (3) enters in accumulator (6) and refers to: in the time that gas receiver (5) needs off-load, the signal of telecommunication is fed back to car load VCU(10 by gas receiver pressure sensor (9)), car load VCU(10) send signal of telecommunication control switching valve (7), so that the gas circuit between the gas outlet of air compressor machine (3) and the air inlet of accumulator (6) is connected, gas circuit between the gas outlet of air compressor machine (3) and drier (4) is closed, now, compressed air in air compressor machine (3) is successively through switching valve (7), after pressure accumulation circuit (8), enter in accumulator (6), described in the time of accumulator (6) off-load, pressurized air in accumulator (6) enters in air compressor machine (3) and refers to: in the time that accumulator (6) needs off-load, pressurized air in accumulator (6) is controlled by-passing valve (12) by bypass line (11) and is connected, now, the pressurized air in accumulator (6) enters in air compressor machine (3) successively after bypass line (11), by-passing valve (12).
10. the control method of a kind of vehicle air compressor energy conserving system according to claim 8, is characterized in that:
The air inlet of described air compressor machine (3) is connected with the gas outlet gas circuit of accumulator (6) successively after by-passing valve (12), bypass line (11), the gas outlet of air compressor machine (3) is connected with the air inlet gas circuit of accumulator (6) successively after switching valve (7), pressure accumulation pipeline (8), the gas outlet of air compressor machine (3) is connected with gas receiver (5) gas circuit successively after switching valve (7), drier (4), and described switching valve (7) is two position three-way valve; On described gas receiver (5), be provided with gas receiver pressure sensor (9), gas receiver pressure sensor (9) and car load VCU(10) signal is connected, car load VCU(10) be connected with switching valve (7) signal; Described by-passing valve (12) is automatically controlled butterfly valve, the control end of by-passing valve (12) and car load VCU(10) signal is connected, car load VCU(10) be connected with accumulator pressure sensor (14) signal being arranged on accumulator (6);
Described in the time of gas receiver (5) off-load, compressed air in air compressor machine (3) enters in accumulator (6) and refers to: in the time that gas receiver (5) needs off-load, the signal of telecommunication is fed back to car load VCU(10 by gas receiver pressure sensor (9)), car load VCU(10) send signal of telecommunication control switching valve (7), so that the gas circuit between the gas outlet of air compressor machine (3) and the air inlet of accumulator (6) is connected, gas circuit between the gas outlet of air compressor machine (3) and drier (4) is closed, now, compressed air in air compressor machine (3) is successively through switching valve (7), after pressure accumulation circuit (8), enter in accumulator (6), described in the time of accumulator (6) off-load, pressurized air in accumulator (6) enters in air compressor machine (3) and refers to: in the time that accumulator (6) needs off-load, the signal of telecommunication is fed back to car load VCU(10 by accumulator pressure sensor (14)), car load VCU(10) send signal of telecommunication control by-passing valve (12) connect, now, the pressurized air in accumulator (6) enters in air compressor machine (3) successively after bypass line (11), by-passing valve (12).
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| CN105864022A (en) * | 2016-05-19 | 2016-08-17 | 无锡汇能达科技有限公司 | System for testing energy saving rate of air compressor and testing method of system |
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