CN103485933A - Stirling engine control system achieving supercharging through work cavity - Google Patents
Stirling engine control system achieving supercharging through work cavity Download PDFInfo
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- CN103485933A CN103485933A CN201310456439.0A CN201310456439A CN103485933A CN 103485933 A CN103485933 A CN 103485933A CN 201310456439 A CN201310456439 A CN 201310456439A CN 103485933 A CN103485933 A CN 103485933A
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Abstract
The invention provides a Stirling engine control system achieving supercharging through a work cavity. Supercharging of working media is achieved by applying the fluctuation rule of pressure of the work cavity, and the working media are directly supplied by means of a working condition controller of the working media of a secondary-level seal cavity. Main components comprise a starting-braking controller, a high-pressure working medium tank, a single-way valve, the working condition controller, a reduction valve, an acceleration valve, a working medium supercharging pump, a low-pressure working medium tank and the like. Compared with an existing control system, the Stirling engine control system is characterized in that as the work cavity replaces part of work of the working medium supercharging pump, the pressure gradient of the high-pressure working medium tank, the secondary-level seal cavity and the low-pressure working medium tank is reasonably utilized, the number of the components of the control system is reduced, operation energy consumption is lowered, and reliability is improved. Control operation of starting, braking, accelerating and reducing of a Stirling engine is achieved. The Stirling engine control system can be used for an automobile having a high control requirement.
Description
Affiliated technical field
The present invention relates to a kind of Stirling engine control system, be specially a kind of Stirling engine control system of active chamber supercharging.
Background technique
Control system is the key of Stirling engine reliable operation, and the Stirling engine of various structures all must be equipped with the control system with its structure matching.For example, the V4-275R of Kockums company motor and the 4-235 of Philips company motor, have corresponding control system.What with Stirling reversible heat engine, mate now is the Stirling engine control system that a kind of Stirling thermal engine operating condition controller of Chinese invention patent (201110035499.6) provides, and can realize the control operation of Stirling engine starting, braking, Operating condition adjustment.
Stirling reversible heat engine is made heat pump or refrigerator, only needs condition controller to realize balanced the getting final product of working medium of each active chamber.A kind of stirling heat pump water heater of Chinese invention patent and a kind of multi-stage stirling refrigerator of Chinese invention patent are application examples.Stirling reversible heat engine is made motor, and starting, braking, acceleration, deceleration and corresponding heat supply all must effectively be controlled.As make vehicular engine, be exactly when working conditions change, to carry out fuel delivery and air demand adjustment.
Existing Stirling reversible heat engine is made the control system of motor, and the working medium in its high-pressure working medium tank is directly pumped into from the low pressure working fluid tank by the working medium suction booster, is not to utilize active chamber for the supercharging of high-pressure working medium tank.Do not utilize the secondary seal chamber to provide voltage stabilizing working medium for condition controller yet.These control system parts are many, energy consumption is high.Improving the Stirling engine control system will be from solving working medium supercharging and voltage stabilizing problem, and the principle of following according to control procedure is found the component combination that parts are minimum, control best results.
The Stirling engine start-up function is when combustion heat supplying starts, and to the filling of the active chamber in isothermal expansion process working medium, the swelling pressure increase, and motor starts rapidly; Brake operating is when high engine speeds turns round, and to the filling of the active chamber in isothermal compression process working medium, motor slows down rapidly; Operating conditions is the working medium amount in running state engine operation chamber and fuel-air amount by synchronous increase and decrease, makes the corresponding increase and decrease of engine speed and output power, and the efficiency of heat engine maintenance is substantially constant.The fuel-air supply depends on the condition controller force value.The required high-pressure working medium of starting braking is provided by the high-pressure working medium tank, acceleration-deceleration (being operating conditions) is used the working medium in the secondary seal chamber, the working medium of low pressure working fluid tank is pressurized to the secondary seal chamber by the working medium suction booster, working medium in the high-pressure working medium tank is that the working medium in the secondary seal chamber enters active chamber through condition controller, then is pressurized to the high-pressure working medium tank.According to this technology path, it is succinct efficient that the Stirling engine control system will become.
Summary of the invention
The objective of the invention is to apply active chamber pressure surge rule and realize the working medium supercharging, directly utilize the working medium in secondary seal chamber to make the supplementary working medium of operating mode controller, the pressure gradient of rationally utilizing high-pressure working medium tank, secondary seal chamber, low pressure working fluid tank to form, design a set of Stirling engine control system that can complete starting braking, acceleration-deceleration.
To achieve these goals, the solution of the present invention is: its structure comprises starting brake monitor, high-pressure working medium tank, one-way valve, condition controller, deceleration valve, acceleration valve, working medium suction booster, low pressure working fluid tank.It is characterized in that: the heat engine rotor phase signal acquisition probe contact heat engine rotor shaft of described starting brake monitor, signal transmssion line connects the control signal of phase signal acquisition probe and starting brake monitor and processes core, and control signal is processed core and connected the working medium control valve.The high-pressure working medium tank is communicated with respectively the working medium control valve import of corresponding each active chamber in the starting brake monitor.The high-pressure working medium tank connects an active chamber through an one-way valve.Each active chamber all can be connected through one-way valve with the high-pressure working medium tank.One-way valve flows to as active chamber to the high-pressure working medium tank.Active chamber interface on the condition controller base plate is communicated with respectively each active chamber, and two connection mouths on the condition controller shell are communicated with respectively acceleration valve outlet and deceleration valve import, and the pressure transducer jack on the condition controller shell is assigned pressure transducer.The acceleration valve import is communicated with the secondary seal chamber, and the deceleration valve outlet is communicated with the low pressure working fluid tank.The import of working medium suction booster is communicated with the low pressure working fluid tank, and the outlet of working medium suction booster is communicated with the secondary seal chamber.Pressure transducer connects fuel oil and air quantity provisioning controller through signal transmssion line.
Described starting brake monitor is comprised of heat engine rotor phase signal acquisition probe, control signal processing core, working medium control valve.Control signal is processed core and is only had disconnection, starts, brakes three kinds of working staties.Off state, the working medium control valve is closed, on not impact of operating mode; Starting state, open in the working medium control valve of isothermal expansion process active chamber, and each active chamber pressure balance of motor can not keep, entry into service; Braking state, open in the working medium control valve of isothermal compression process active chamber, and pressure raises, the pressure of balance in isothermal expansion process active chamber, and the complete machine output work reduces, rotating speed reduces, and finally shuts down.The signal general designation starting brake control signal of these three kinds of working staties is set.
Described deceleration valve and acceleration valve can not be simultaneously in open modes.Deceleration valve is opened and acceleration valve cuts out, and the working medium of each active chamber flows into the low pressure working fluid tank through condition controller and deceleration valve, and fuel oil and amount of supplied air reduce, engine retard; Deceleration valve cuts out and acceleration valve is opened, and the working medium in the secondary seal chamber flows into active chamber through acceleration valve and condition controller, and fuel oil and amount of supplied air increase, and motor accelerates; Deceleration valve and acceleration valve are all closed, and there is no Working fluid flow in condition controller, and fuel oil and amount of supplied air are constant, and motor is in steady-working state.Control the signal general designation operating conditions signal of Stirling engine acceleration-deceleration stable operation.
The invention has the advantages that: the one, use active chamber to inject working medium to the high-pressure working medium tank, the high-pressure working medium pressure tank reaches the active chamber Maximum operating pressure just to be stopped injecting automatically, than using, the working medium suction booster is simple and reliable to high-pressure working medium tank pumping working medium, the corresponding reduction of operating cost.The 2nd, rationally utilize the steady characteristics of the large pressure of secondary seal chamber working medium amount, the working medium in the secondary seal chamber, for condition controller working medium source, is saved to the working medium reduction valve required for condition controller in the high-pressure working medium tank.The 3rd, the working medium suction booster is delivered to the secondary seal chamber by the working medium pump in the low pressure working fluid tank, and relatively existing control system is delivered to the high-pressure working medium tank by the working medium pump in the low pressure working fluid tank, and low to the requirement of working medium suction booster boost performance, energy consumption is low.The 4th, all parts energy compact Layout of this control system, around body, are rationally utilized space.
The accompanying drawing explanation
Below in conjunction with accompanying drawing and embodiment, the invention will be further described:
Fig. 1 is a kind of Stirling engine control system schematic diagram of active chamber supercharging;
Fig. 1 has explained the annexation of the parts such as starting brake monitor, high-pressure working medium tank, one-way valve, condition controller, deceleration valve, acceleration valve, working medium suction booster, low pressure working fluid tank.Control system is controlled by 3 signal sources such as starting brake control signal, rotor phase signal, operating conditions signals, completes 4 kinds of operations such as starting, braking, acceleration, deceleration.Square frame represents parts or signal source, and the direction of arrow represents Working fluid flow direction or signal transfer direction.
Embodiment
Fig. 1 is the automobile-used Stirling engine control system block diagram with 4 active chambers.Condition controller and starting brake monitor are communicated with respectively 4 active chambers at regenerator with on heat outflow end cylinder connecting tube.The regenerator of an active chamber (being active chamber four in figure) is communicated with check valve inlet with heat outflow end cylinder connecting tube, and the one-way valve outlet is communicated with the high-pressure working medium tank.The high-pressure working medium tank is communicated with respectively 4 working medium control valves import of starting brake monitor, and 4 working medium control valve outlets are communicated with respectively 4 active chambers.The heat engine rotor phase signal acquisition probe contact heat engine rotor shaft of starting brake monitor, signal transmssion line connects the control signal of phase signal acquisition probe and starting brake monitor and processes core.Control signal is processed core and is connected the working medium control valve.Two connection mouths on the condition controller shell are communicated with respectively acceleration valve outlet and deceleration valve import.Pressure transducer jack on the condition controller shell is assigned pressure transducer.The acceleration valve import is communicated with the secondary seal chamber, and the deceleration valve outlet is communicated with the low pressure working fluid tank.The import of working medium suction booster is communicated with the low pressure working fluid tank, and the outlet of working medium suction booster is communicated with the secondary seal chamber.Pressure transducer connects fuel oil and amount of supplied air controller through signal transmssion line.The Stirling engine that configures this control system is the new selection of new-energy automobile.The electric vehicle (201310165439.5) that a kind of stirling generator of Chinese invention patent drives is the possible technique scheme for automobile by Stirling engine.
Working procedure of the present invention is: when motor car engine is started, light and spray into the gas mixture that heat flows into the end burning chamber, make heat inflow end and heat outflow end the temperature difference occur.To start brake monitor and pull out starting state from off state, send the signal that injects working medium to the active chamber in isothermal expansion process phase place, the working medium control valve is opened, and the active chamber in isothermal expansion process phase place expands and promotes piston movement, engine startup operation.To start brake monitor and pull out back off state, complete start-up function.After engine start, open acceleration valve, deceleration valve cuts out, and in the secondary seal chamber, working medium enters condition controller and makes its pressure rising, and pressure transducer sends the signal that increases oil and amount of supplied air, and chamber temperature raises.Working medium in the secondary seal chamber constantly enters each active chamber through condition controller simultaneously, and each active chamber working pressure raises, and the motor Accelerating running completes and accelerates operation.The active chamber pressure that connects the high-pressure working medium tank is during higher than the high-pressure working medium pressure tank, one-way valve opens, and working medium flows into the high-pressure working medium tank from this active chamber.During this active chamber pressure decreased, closed check valve, the working medium in the high-pressure working medium tank can not flow back to active chamber.This active chamber pressure decreased is near Minimum operating pressure, because there is working medium to flow into the high-pressure working medium tank, this active chamber pressure is lower than other active chamber pressure, and in condition controller, working medium takes the lead in flowing into this active chamber, supplements the working medium amount to other active chamber quantity.Enter near next circulation Maximum operating pressure, the working medium in this active chamber presses off again one-way valve, and working medium flows into the high-pressure working medium tank.So repeatedly carry out, until the high-pressure working medium pressure tank reaches the active chamber Maximum operating pressure.Working medium is pumped into to the high-pressure working medium tank from the secondary seal chamber.Engine operation, open deceleration valve, and acceleration valve cuts out, working medium in each active chamber flows into the low pressure working fluid tank through condition controller and deceleration valve, and pressure transducer sends the signal that reduces oil and amount of supplied air simultaneously, and engine speed reduces, output work reduces, and realizes deceleration-operation.While needing emergency shutdown; to start brake monitor and pull out braking state from off state; send the signal that injects working medium to the active chamber in isothermal compression process phase place; the working medium control valve is opened; active chamber pressure in isothermal compression process phase place rises suddenly; reach rapidly the pressure in isothermal expansion process active chamber, engine braking is also out of service.To start brake monitor and pull out back off state, complete brake operating.Acceleration valve and deceleration valve be all in closed condition, motor stable operation.Acceleration valve and deceleration valve are all in open mode, and the working medium in the secondary seal chamber flows directly into the low pressure working fluid tank, and condition controller lost efficacy.Forbid operation like this.When the working medium in the low pressure working fluid tank reaches a certain amount of, start the working medium suction booster, working medium is pumped into to the secondary seal chamber from the low pressure working fluid tank.
Claims (2)
1. the Stirling engine control system of an active chamber supercharging, comprise starting brake monitor, high-pressure working medium tank, one-way valve, condition controller, deceleration valve, acceleration valve, working medium suction booster, low pressure working fluid tank.It is characterized in that: the heat engine rotor phase signal acquisition probe contact heat engine rotor shaft of described starting brake monitor, signal transmssion line connects the control signal of phase signal acquisition probe and starting brake monitor and processes core, control signal is processed core and is connected the working medium control valve, the high-pressure working medium tank is communicated with respectively the working medium control valve import of corresponding each active chamber in the starting brake monitor, the high-pressure working medium tank connects an active chamber through an one-way valve, each active chamber all can be connected through one-way valve with the high-pressure working medium tank, one-way valve flows to as active chamber to the high-pressure working medium tank, active chamber interface on the condition controller base plate is communicated with respectively each active chamber, two connection mouths on the condition controller shell are communicated with respectively acceleration valve outlet and deceleration valve import, pressure transducer jack on the condition controller shell is assigned pressure transducer, the acceleration valve import is communicated with the secondary seal chamber, the deceleration valve outlet is communicated with the low pressure working fluid tank, the import of working medium suction booster is communicated with the low pressure working fluid tank, the outlet of working medium suction booster is communicated with the secondary seal chamber, pressure transducer connects fuel oil and amount of supplied air controller through signal transmssion line.
2. the Stirling engine control system of a kind of active chamber supercharging according to claim 1 is characterized in that: described starting brake monitor by heat engine rotor phase signal acquisition probe, control signal process core, the working medium control valve forms.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751148A (en) * | 2019-03-11 | 2019-05-14 | 孔令斌 | A kind of Stirling engine control system |
| CN111795720A (en) * | 2020-05-25 | 2020-10-20 | 上海齐耀动力技术有限公司 | Stirling refrigerator test bench working condition gear control system and control method |
| CN112343731A (en) * | 2020-10-22 | 2021-02-09 | 上海齐耀动力技术有限公司 | Power generation control method and system for molten salt Stirling engine |
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| US4677824A (en) * | 1985-09-26 | 1987-07-07 | Aisin Seiki Kabushiki Kaisha | Output control apparatus for Stirling engines |
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| WO2011151888A1 (en) * | 2010-06-01 | 2011-12-08 | 横浜製機株式会社 | External-combustion, closed-cycle thermal engine |
| CN102705105A (en) * | 2012-05-28 | 2012-10-03 | 孔令斌 | Multi-ring connected Stirling reversible heat engine |
| CN103231661A (en) * | 2013-04-17 | 2013-08-07 | 孔令斌 | Electric vehicle driven by Stirling engine |
| CN103321776A (en) * | 2013-07-01 | 2013-09-25 | 大连宏海新能源发展有限公司 | Integrated high-pressure gas supply system with solar Stirling generator unit |
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Patent Citations (9)
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| US4677824A (en) * | 1985-09-26 | 1987-07-07 | Aisin Seiki Kabushiki Kaisha | Output control apparatus for Stirling engines |
| JP2001173515A (en) * | 1999-12-17 | 2001-06-26 | Kubota Corp | Stirling expander |
| CN101413461A (en) * | 2008-11-20 | 2009-04-22 | 上海齐耀动力技术有限公司 | Stirling engine working substance system |
| WO2011151888A1 (en) * | 2010-06-01 | 2011-12-08 | 横浜製機株式会社 | External-combustion, closed-cycle thermal engine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751148A (en) * | 2019-03-11 | 2019-05-14 | 孔令斌 | A kind of Stirling engine control system |
| CN111795720A (en) * | 2020-05-25 | 2020-10-20 | 上海齐耀动力技术有限公司 | Stirling refrigerator test bench working condition gear control system and control method |
| CN112343731A (en) * | 2020-10-22 | 2021-02-09 | 上海齐耀动力技术有限公司 | Power generation control method and system for molten salt Stirling engine |
| CN112343731B (en) * | 2020-10-22 | 2023-10-10 | 上海齐耀动力技术有限公司 | Fused salt Stirling engine power generation control method and system |
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Application publication date: 20140101 |