CN104763520A - Engine supercharging method - Google Patents
Engine supercharging method Download PDFInfo
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- CN104763520A CN104763520A CN201510074190.6A CN201510074190A CN104763520A CN 104763520 A CN104763520 A CN 104763520A CN 201510074190 A CN201510074190 A CN 201510074190A CN 104763520 A CN104763520 A CN 104763520A
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- pressure
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- gas compressor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention discloses an engine supercharging method. An electric supercharger formed by a motor, a gas compressor, a transmission mechanism, a controller, a motor rotation speed sensor, a gas pressure sensor and the like is added in front of an engine air filter. The method comprises setting motor initial rotation speed according to required pressure and gas compressor characteristics; acquiring real-time acquired gas outlet pressure of the gas compressor during the operation and adjusting motor rotation speed according to gas outlet pressure in real time to form closed-loop control and keeping the gas outlet pressure stable. By the aid of the method, the electric supercharger is added, so that the problems of reduction of engine/generator power and impact load capacity caused by insufficient air inlet in the condition of highland low pressure are solved, the motor is not affected by the gas pressure, the output power can be recovered to the plain level, and the method is unsurpassable compared with outer mechanical supercharging methods.
Description
Technical field
The present invention relates to a kind of engine booster technology, be specifically related to a kind of engine booster method and supercharging device.
Background technique
Motor/generator group relies on combustion fuel, and chemical energy is converted to mechanical/electrical energy.In high altitude low air pressure situation, because air inlet is not enough, when causing burning, oxygen deficiency and working medium deficiency, make combustion condition worsen, and motor/generator group output power declined a lot, affect and normally use.
The pressurized machine that current motor adopts mainly contains mechanical supercharger and exhaust-gas turbocharger.Mechanical supercharger drives gas compressor by motor by driving mechanism, improves suction pressure.Exhaust-gas turbocharger is the energy utilizing engine exhaust, drives turbine and coaxial mounted gas compressor thereof to rotate acting, improves the air density entering engine chamber, thus increase engine power.In addition the type such as wave pressure supercharger, resonance suction tude is also had, but independent use usually.The shortcoming of mechanical supercharger is: 1, be connected with motor fixed drive ratio, pressurized effect changes with engine speed, pressure ratio cannot be regulated as required to be all in the optimum state to make engine performance and gas compressor, and after height above sea level raises, suction pressure reduces with barometric pressure and reduces; 2, when not needing, connection cannot be thrown off with the power loss reducing motor; 3, need to take certain engine power output interface and be subject to output interface Power Limitation; 4, complexity is connected with the driving mechanism of motor and gas circuit.
The shortcoming of exhaust-gas turbocharger is: 1, only when large load, just has enough exhaust energies to do work for driving gas compressor; 2, the power drop that High aititude brings cannot be overcome completely; 3, because exhaust gas turbine-gas compressor exists rotary inertia, there is operating lag for shock load in the speed restriction of intake and exhaust flowing in addition.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of in plateau low pressure situation, recover motor/generator group output power to normal level, the engine booster method that output power does not reduce and supercharging device.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of engine booster method, increase electric booster before motor air filter, this electric booster is driven by motor, the compressor characteristics configured according to required pressure and this electric booster set the initial speed of motor, the outlet pressure of Real-time Collection electric booster gas compressor in running, and adjust motor speed in real time according to outlet pressure, form closed loop control, keep outlet pressure to stablize, described electric booster comprises motor, gas compressor, driving mechanism, controller, motor speed sensor, gas pressure sensor, described gas pressure sensor comprises barometric pressure sensor, gas compressor outlet pressure sensor, wherein motor connects gas compressor through driving mechanism, blower outlet connecting engine suction tude, controller output end connects motor, controller input end connects gas pressure sensor and motor speed sensor, controller adopts single chip machine controlling circuit, gather the pressure signal of each gas pressure sensor and the tach signal of motor speed sensor, pass through control program, export the drive control signal controlling motor.Motor rotation drives gas compressor to carry out supercharging through driving mechanism, and single-chip microcomputer is according to the gas compressor outlet pressure of feedback, and adjustment motor speed, keeps outlet pressure to stablize.
Further, required pressure is the difference of the real atmosphere pressure of setting pressure and detection, when motor is common engine, when there is no other pressurized machine, described setting pressure is normal atmospheric pressure, when having other pressurized machine, setting pressure is the differential pressure calculated in real time, and this differential pressure is the difference of normal atmospheric pressure and other pressurized machine outlet pressure.
In order to direct vision electric booster boost conditions, and prevent the overpressure caused that break down such as controller, sensor, motor, setting pressure table and Decompression valves on engine air inlet tube.
When engine configurations during other pressurized machine, also to increase other pressurized machine outlet pressure sensor, the input end of this sensor connection control device, participate in controlling.
Owing to have employed technique scheme, the technological progress that the present invention obtains is:
The present invention is by increasing the mode of electric booster, solve in plateau low pressure situation, the problem that the motor/generator group power drop caused due to air inlet deficiency and shock load ability reduce, motor is not by effects of air pressure, output power can be returned to Plain level, be that other engine driven supercharging mode cannot surmount.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is program flow diagram of the present invention;
Fig. 3 is the detection control flow chart of the present invention for non-supercharged engine;
Fig. 4 is the detection control flow chart of the present invention for supercharged engine;
Wherein: 1, pressure gauge, 2, Decompression valves, 3, gas compressor outlet pressure sensor, 4, suction tude, 5, gas compressor, 6, motor, 7, controller, 8, driving mechanism.
Embodiment
Below in conjunction with embodiment, the present invention is described in further details:
The present invention is used for solving in plateau low pressure situation, the problem that the motor/generator group power drop caused due to air inlet deficiency and shock load ability reduce.
The invention provides a kind of method solving motor/generator group power drop and reduction of shock load ability in plateau low pressure situation, the method increases electric booster before motor/generator group air filter, this electric booster is driven by motor, drive gas compressor, the air density entering motor is returned to Plain level or a certain intermediate value, thus improve the combustion process of motor, reduce oil consumption and row's temperature, and recover the output power of motor.This electric booster sets the initial speed of motor according to the compressor characteristics that required pressure and this electric booster configure, the outlet pressure of Real-time Collection electric booster gas compressor in running, and adjust motor speed in real time according to outlet pressure, form closed loop control, keep outlet pressure to stablize.Above-mentioned required pressure is the difference of the real atmosphere pressure of setting pressure in controller and detection, for non-supercharged engine, electric booster is contained in engine air inlet tube place, the air density entering motor is returned to Plain level (standard atmospheric pressure), described setting pressure is normal atmospheric pressure.For supercharged engine, electric booster is contained between engine air air filter and other pressurized machine, the air density entering motor is returned to a certain intermediate value, described setting pressure is the differential pressure calculated in real time, and this differential pressure is the difference of normal atmospheric pressure and other pressurized machine outlet pressure.
Engine booster method of the present invention needs electric booster to realize, based on said method and prior art, inventor has devised a kind of enginer supercharging device, as shown in Figure 1, this device comprises motor 6, gas compressor 5, driving mechanism 8, controller 7, motor speed sensor (is arranged on motor shaft, adopt encoder, do not mark in figure), gas pressure sensor, described gas pressure sensor comprises barometric pressure sensor (input control device, do not mark in figure), gas compressor outlet pressure sensor 3, wherein motor 6 can be belt transmission through driving mechanism 8(, chain transmission, also can be speed-change gear box transmission, the present invention adopts speed-change gear box transmission) connect gas compressor 5, gas compressor 5 exports connecting engine suction tude 4, controller 7 output terminal connects motor 6, controller input end connects gas pressure sensor and motor speed sensor, controller adopts single chip machine controlling circuit, gather the pressure signal of each gas pressure sensor and the tach signal of motor speed sensor, pass through control program, export the drive control signal controlling motor, motor rotation drives gas compressor to carry out supercharging through driving mechanism, single-chip microcomputer is according to the gas compressor outlet pressure of feedback, adjustment motor speed, outlet pressure is kept to stablize.
In order to direct vision electric booster boost conditions, and prevent the overpressure caused that break down such as controller, sensor, motor, setting pressure table 1 and Decompression valves 2 on engine air inlet tube, the releasing pressure automatically when outlet pressure is too high; Operator can also pass through the too high or too low fault of pressure gauge Timeliness coverage outlet pressure.
When engine configurations during other pressurized machine, also to increase other pressurized machine outlet pressure sensor, the input end of this sensor connection control device, participate in controlling.
Working principle:
Figure 2 shows that control program flow chart of the present invention, when normally working, controller reads atmospheric pressure, according to the setting value of the corresponding speed curves of compressor characteristics data selection as motor speed.Be in operation and read out atmospheric pressure and motor speed in real time, adjustment motor speed makes outlet pressure stablize in time, and identifies fault, takes corresponding protective measure.
For turbosupercharged engine, when zero load, gas compressor outlet pressure is set to close to Plain air pressure that (standard atmospheric pressure, sets according to non-supercharged engine, detection control flow process is as shown in Figure 2), ensure margin of power during the good and shock load of engine combustion.During band heavy load stable state, the exhaust-gas turbocharger carried due to motor has the ability compensating plateau air pressure and decline, therefore under the prerequisite ensureing air mass flow, suitable reduction compressor delivery pressure (setting pressure is the difference of normal atmospheric pressure and the turbosupercharger outlet pressure calculated in real time, and detection control flow process as shown in Figure 3).The power consumpiton of generator can be reduced like this, can also prevent the secondary booster due to turbosupercharger from causing engine charge overpressure.The releasing pressure automatically when outlet pressure is too high.Operator can also pass through the too high or too low fault of pressure gauge Timeliness coverage outlet pressure.
Application example effect:
For BF8M1015C supercharged diesel engine, on Plain, power is the motor of 400kW, power loss 22.5%, i.e. 90kW after height above sea level 3500m.And unloaded suction pressure to be returned to Plain level, the power of gas compressor acting is 4kW.Calculate by compressor efficiency 60%, motor efficiency 90%, driving mechanism efficiency 95%, electric booster only needs the power consuming 8kW can recover engine charge pressure to Plain level.
Claims (3)
1. an engine booster method, it is characterized in that: before motor air filter, increase electric booster, this electric booster is according to required pressure and electric booster compressor characteristics setting motor initial speed, Real-time Collection electric booster gas compressor outlet pressure in running, according to outlet pressure adjustment motor speed, form closed loop control, described electric booster comprises motor (6), gas compressor (5), driving mechanism (8), controller (7), motor speed sensor, gas pressure sensor, described gas pressure sensor comprises barometric pressure sensor, gas compressor outlet pressure sensor (3), wherein motor (6) connects gas compressor (5) through driving mechanism (8), gas compressor (5) outlet connecting engine suction tude (4), controller (7) output terminal connects motor (6), controller input end connects gas pressure sensor and motor speed sensor, controller adopts single chip machine controlling circuit, gather the pressure signal of each gas pressure sensor and the tach signal of motor speed sensor, pass through control program, export the drive control signal controlling motor.
2. engine booster method according to claim 1, it is characterized in that: required pressure is the difference of the real atmosphere pressure of setting pressure and detection, when motor is without other pressurized machine, setting pressure is normal atmospheric pressure, when having other pressurized machine, setting pressure is the difference of normal atmospheric pressure and other pressurized machine outlet pressure calculated in real time.
3. engine booster method according to claim 1, is characterized in that: also comprise pressure gauge (1), Decompression valves (2), and described pressure gauge (1) and Decompression valves (2) are arranged on engine air inlet tube (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510074190.6A CN104763520B (en) | 2015-02-12 | 2015-02-12 | Engine booster method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510074190.6A CN104763520B (en) | 2015-02-12 | 2015-02-12 | Engine booster method |
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| CN104763520A true CN104763520A (en) | 2015-07-08 |
| CN104763520B CN104763520B (en) | 2017-06-16 |
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| CN201510074190.6A Active CN104763520B (en) | 2015-02-12 | 2015-02-12 | Engine booster method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250810A (en) * | 2021-06-29 | 2021-08-13 | 四川迅联达智能科技有限公司 | Method and system for stabilizing intake pressure of two-stroke engine |
| CN114352402A (en) * | 2022-01-17 | 2022-04-15 | 中船重工(重庆)西南装备研究院有限公司 | Self-adaptive control system of supercharger |
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| CN1528613A (en) * | 2003-10-01 | 2004-09-15 | 时国庆 | Car petrol engine computer-controlled electric intake supercharging system |
| CN1926316A (en) * | 2004-03-04 | 2007-03-07 | 丰田自动车株式会社 | Control device for supercharger with electric motor |
| DE102007000300A1 (en) * | 2006-06-02 | 2007-12-06 | Denso Corp., Kariya | Internal-combustion engine e.g. multi-cylinder diesel engine, control device for vehicle, has control unit obtaining speed of turbocharger rotary axis based on inlet and outlet pressure and correlation between shaft speed and pressure ratio |
| CN201041073Y (en) * | 2007-03-19 | 2008-03-26 | 刘忠保 | Electronic control injection gasoline engine air inlet system |
| JP2010116896A (en) * | 2008-11-14 | 2010-05-27 | Mitsubishi Electric Corp | Control device for internal combustion engine |
-
2015
- 2015-02-12 CN CN201510074190.6A patent/CN104763520B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1528613A (en) * | 2003-10-01 | 2004-09-15 | 时国庆 | Car petrol engine computer-controlled electric intake supercharging system |
| CN1926316A (en) * | 2004-03-04 | 2007-03-07 | 丰田自动车株式会社 | Control device for supercharger with electric motor |
| DE102007000300A1 (en) * | 2006-06-02 | 2007-12-06 | Denso Corp., Kariya | Internal-combustion engine e.g. multi-cylinder diesel engine, control device for vehicle, has control unit obtaining speed of turbocharger rotary axis based on inlet and outlet pressure and correlation between shaft speed and pressure ratio |
| CN201041073Y (en) * | 2007-03-19 | 2008-03-26 | 刘忠保 | Electronic control injection gasoline engine air inlet system |
| JP2010116896A (en) * | 2008-11-14 | 2010-05-27 | Mitsubishi Electric Corp | Control device for internal combustion engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250810A (en) * | 2021-06-29 | 2021-08-13 | 四川迅联达智能科技有限公司 | Method and system for stabilizing intake pressure of two-stroke engine |
| CN114352402A (en) * | 2022-01-17 | 2022-04-15 | 中船重工(重庆)西南装备研究院有限公司 | Self-adaptive control system of supercharger |
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| CN104763520B (en) | 2017-06-16 |
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