CN109404129A - Isothermal heat release circulation engine and its control method - Google Patents
Isothermal heat release circulation engine and its control method Download PDFInfo
- Publication number
- CN109404129A CN109404129A CN201811098526.2A CN201811098526A CN109404129A CN 109404129 A CN109404129 A CN 109404129A CN 201811098526 A CN201811098526 A CN 201811098526A CN 109404129 A CN109404129 A CN 109404129A
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- heat release
- spark plug
- isothermal
- piston
- electric discharge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P9/00—Electric spark ignition control, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The present invention provides a kind of isothermal heat release circulation engine and its control methods, including cylinder, piston, spark plug and ignition coil (3)；Isothermal exothermic process is merged on the basis of the Alto of spark-ignition engine circulation, cooling loss is greatly reduced, improves fuel efficiency.Entire combustion process is made of constant volume heat release and isothermal exothermic process.Each spark plug is driven by ignition coil (3), coordinates to carry out combustion heat release rate control by control single electrode electric discharge strategy, multi-electrode electric discharge.Constant volume burning is first passed through in compression top center, then by the increase of combustion chamber volume during piston downlink and single electrode electric discharge strategy, multi-electrode coordinated control, realizes isothermal heat release thermodynamic cycle；It can be improved fuel efficiency, reduce cooling loss, while can reduce Temperature of Working, and then reduce pinking probability.
Description
Technical field
The present invention relates to technical field of internal combustion engines, and in particular, to a kind of isothermal heat release circulation engine and its controlling party
Method more particularly to a kind of high efficiency isothermal heat release for being useful in the spark-ignition engines fields such as gasoline engine, gas internal combustion engine machine follow
Ring internal combustion engine.
Background technique
Improving efficiency of combustion is the common-denominator target in engine development process.For ignition internal combustion engine, generally by dilute
Thin burning, the methods of high compression ratio improve efficiency, but the problems such as also bring along combustion instability, easy pinking.In addition, heat transfer damage
Lose is also to limit one of the big obstacle that engine thermal efficiency improves.Ignition internal combustion engine is recycled based on Alto, and the prior art can
To be summarized as recycling to improve efficiency in ideal Alto by real engine cyclic approximation, there is no in thermodynamic cycle
It is proposed innovation to promote engine efficiency.
Therefore, a kind of high fuel efficiency is designed, the internal combustion engine of low cooling loss has certain realistic meaning.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of isothermal heat release circulation engine and its controls
Method.
A kind of isothermal heat release circulation engine provided according to the present invention, including cylinder, piston, spark plug and ignition lead
Circle；The piston and spark plug are arranged in cylinder, and piston and cylinder inner wall surround to form the first space；The ignition coil
It is connected with spark plug, and discharge energy and the discharge period of spark plug can be controlled；
Intake and exhaust valves are provided on the cylinder.
Preferably, N number of spark plug can be realized single electrode electric discharge or multi-electrode under the control of M ignition coil
Coordinate electric discharge, wherein N and M is positive integer.
Preferably, the ignition coil includes control circuit, coil block, high-voltage diode and high-voltage conducting wires；It is described
Control circuit is connected with coil block, and being capable of the electric discharge of control coil component；The coil block is through high-voltage diode and height
Conducting wire is pressed to be connected；Ignition coil is connected by high-voltage conducting wires with spark plug.
A kind of isothermal heat release circulation engine control method provided according to the present invention is recycled using above-mentioned isothermal heat release
Internal combustion engine, comprising:
Combustion process step: N number of spark plug is under the control of M ignition coil according to the first electric discharge strategy of setting
Electric discharge, lights the mixture of part automotive fuel and air, and subsequent N number of spark plug is under the control of M ignition coil
According to the tactful continuous discharge of the second electric discharge of setting, the mixture of burn remaining automotive fuel and air realizes thermodynamics etc.
Warm process.
Preferably, induction stroke step: inlet valve is opened, exhaust valve closing, by the movement of piston so that the first space
Volume increases, to introduce outside air in cylinder；
Compression stroke step: intake and exhaust valves are turned off, by the movement of piston so that the volume in the first space subtracts
Small, the mixture of automotive fuel and air is compressed；
Expansion stroke step: the mixture of the automotive fuel and air that are ignited generates high temperature and high pressure gas, pushes and lives
Plug movement, externally does work；
Heat rejection process step: IC Intake Valve Closes, exhaust valve are opened, constant volume heat extraction；
Exhaust stroke step: IC Intake Valve Closes, exhaust valve are opened, and are moved by piston inertia so that the first spatial volume subtracts
It is small, exhaust gas is discharged.
Preferably, the first electric discharge strategy and the second electric discharge strategy include impulse discharge, multiple discharge and continuously put
Any one of electricity appoints multiple combinations.
Preferably, the heat liberation rate, heat release rate of constant temperature process can be calculated by following formula in the combustion process step:
Wherein, Q is the heat released in isothermal exothermic process,For crank angle, R is ideal gas constant, and K is constant,
S is top land area, V0First spatial volume when for top dead centre, λ are connecting rod ratio,Crank angle when for compression top center.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, mechanical structure of the present invention is simple, is easily installed transformation, easy to maintain；
2, the present invention can be recycled by isothermal heat release and improve fuel efficiency；
2, cooling loss can be greatly reduced by reducing isothermal heat release circulation in the present invention；
3, the present invention can reduce Temperature of Working, and then reduce pinking probability.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is that isothermal heat release recycles schematic diagram in isothermal heat release circulation engine provided by the invention and its control method；
Fig. 2 is that spark-ignition engine Alto recycles schematic diagram；
Fig. 3 is that isothermal heat release circulating combustion room shows in isothermal heat release circulation engine provided by the invention and its control method
It is intended to；
Fig. 4 is the principle signal of ignition coil in isothermal heat release circulation engine provided by the invention and its control method
Figure；
Fig. 5 is preferred single electrode ignition strategies in isothermal heat release circulation engine provided by the invention and its control method
Schematic diagram.
It is shown in figure:
First spark plug 1
Second spark plug 2
Ignition coil 3
Coil block 4
High-voltage diode 5
High-voltage conducting wires 6
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
A kind of isothermal heat release circulation engine provided according to the present invention, including cylinder, piston, spark plug and ignition lead
Circle 3；The piston and spark plug are arranged in cylinder, and piston and cylinder inner wall surround to form the first space；The ignition lead
Circle 3 is connected with spark plug, and can control discharge energy and the discharge period of spark plug；Be provided on the cylinder into
Valve and exhaust valve.
Preferably, N number of spark plug can be realized single electrode electric discharge or mostly electric under the control of M ignition coil 3
Electric discharge is coordinated in pole, and wherein N and M is positive integer.The ignition coil 3 includes control circuit, coil block 4, high-voltage diode 5
And high-voltage conducting wires 6；The control circuit is connected with coil block 4, and being capable of the electric discharge of control coil component 4；The coil
Component 4 is connected through high-voltage diode 5 with high-voltage conducting wires 6；Ignition coil 3 is connected by high-voltage conducting wires 6 with spark plug.
A kind of isothermal heat release circulation engine control method provided according to the present invention is recycled using above-mentioned isothermal heat release
Internal combustion engine, comprising:
Combustion process step: N number of spark plug is under the control of M ignition coil 3 according to the first electric discharge plan of setting
It slightly discharges, lights the mixture of part automotive fuel and air, control of the subsequent N number of spark plug in M ignition coil 3
Under discharge tactful continuous discharge according to the second of setting, the mixture of burn remaining automotive fuel and air realizes thermodynamics
Constant temperature process.
Specifically, induction stroke step: inlet valve is opened, exhaust valve closing, by the movement of piston so that the first space
Volume increases, to introduce outside air in cylinder；
Compression stroke step: intake and exhaust valves are turned off, by the movement of piston so that the volume in the first space subtracts
Small, the mixture of automotive fuel and air is compressed；
Expansion stroke step: the mixture of the automotive fuel and air that are ignited generates high temperature and high pressure gas, pushes and lives
Plug movement, externally does work；
Heat rejection process step: IC Intake Valve Closes, exhaust valve are opened, constant volume heat extraction；
Exhaust stroke step: IC Intake Valve Closes, exhaust valve are opened, and are moved by piston inertia so that the first spatial volume subtracts
It is small, exhaust gas is discharged.
The first electric discharge strategy and the second electric discharge strategy include appointing in impulse discharge, multiple discharge and continuous discharge
A kind of or multiple combinations.The heat liberation rate, heat release rate of constant temperature process can be calculated by following formula in the combustion process step:
Wherein, Q is the heat released in isothermal exothermic process,For crank angle, R is ideal gas constant, and K is constant,
S is top land area, V0First spatial volume when for top dead centre, λ are connecting rod ratio,Crank angle when for compression top center.
More specifically, the heat liberation rate, heat release rate formula calculation method of constant temperature process is as follows in combustion process step:
It, can not in working medium when being recycled using isothermal heat release according to second law of thermodynamics Q (heat)=W (function)+U (interior energy)
Become, recycles interior investment thermal energy and be converted directly into external output work, to improve fuel efficiency, reduce cooling loss.
In the case where not considering heat transfer loss, heat liberation rate, heat release rate passes through the first formula:
It is calculated, wherein Q is the heat released in isothermal exothermic process, and U is energy in working medium, and W is that working medium pushes piston
The function done,For crank angle.For isothermal heat release, interior energy is constant, so there is the second formula:
Wherein p is sender matter pressure, and V is working medium volume.According to equation for ideal gases, there are in the exothermic situation of isothermal
Three formula:
PV=nRT=K
Wherein n is the amount of substance, and R is ideal gas constant, and K is constant.
In conjunction with the second formula and third formula, then there is the 4th formula:
In internal combustion engine expansion stroke, there are the 5th formula:
V=Svt+V0
Wherein S is top land area, and v is piston downstream rate, V0First spatial volume when for top dead centre.According to internal combustion
The machine equation of motion, there are the 6th formula:
Wherein ω is angular velocity of crankshaft, and λ is connecting rod ratio.Exist simultaneously the 7th formula:
WhereinCrank angle when for compression top center.6th formula and the 7th formula, which are substituted into the 5th formula, can obtain the 8th
Formula:
8th formula, which is substituted into the 4th formula, can obtain the 9th formula:
Calculation of Heat Release Rate formula in internal combustion engine isothermal exothermic process in the 9th formula as present invention.Pass through ignition coil 3
Progress combustion heat release rate control is coordinated in control single electrode electric discharge strategy, multi-electrode electric discharge, while by piston in combustion
Downlink realizes that thermodynamics closely waits heat releases circulation.
Further, as shown in Figure 1, being recycled for traditional Alto, a-b is induction stroke, and b-c is compression stroke, and d-e is
Expansion stroke, b-a are exhaust stroke, in addition, c-d is constant volume burning process, e-f is constant volume heat extraction after exhaust throttle is opened
Journey；As shown in Fig. 2, recycling for isothermal heat release proposed by the present invention, a-b is induction stroke, and b-c is compression stroke, and d-e-f is
Expansion stroke, b-a are exhaust stroke, and combustion process contains the constant volume burning process of c-d and the constant-temperature combustion process of d-e.
Further, as shown in figure 3, by the quantity of spark plug 3 be two for, combustion process by the first spark plug 1,
Second spark plug 2 and the control of ignition coil 3 and implementation.First spark plug 1 and the second spark plug 2 respectively by ignition coil 3 into
Row control, ignition coil 3 carry out single electrode electric discharge strategy implement.When piston runs to top dead centre attachment, by the first spark plug 1
It first discharges or the first spark plug 1 and the second spark plug 2 while discharging, ignition coil 3 controls discharge energy and electric discharge continues
Phase completes c-d constant volume burning process, lights part fuel gas, in piston downlink by first spatial flow field by the first fire
Flower plug 1 or the first spark plug 1 and 2 collective effect of the second spark plug persistently export the remaining unburned gas of energy burning, realize
The control of the heat liberation rate, heat release rate as shown in the 9th formula, simultaneously because when piston downlink the first spatial volume increase, in addition passing through a little
The Simultaneous Pressure of fiery strategy and multi-electrode control period declines, and realizes thermodynamics constant temperature process.
As shown in figure 4, in parallel by four coil blocks 4 and fiery by the driving of high-voltage diode 5 first inside ignition coil 3
Flower plug 1 or the second spark plug 2, are attached between ignition coil 3 and spark plug by high-voltage conducting wires 6.Ignition coil 3 can be real
Impulse discharge, multiple discharge and continuous discharge of different-energy and duration now as shown in Figure 5 etc., the reality of specific electric discharge strategy
It applies and is controlled according to actual needs.
In the description of the present application, it is to be understood that term " on ", "front", "rear", "left", "right", " is erected at "lower"
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on the figure or position
Relationship is set, description the application is merely for convenience of and simplifies description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
One skilled in the art will appreciate that in addition to realizing system provided by the invention in a manner of pure computer readable program code
It, completely can be by the way that method and step be carried out programming in logic come so that provided by the invention other than system, device and its modules
System, device and its modules are declined with logic gate, switch, specific integrated circuit, programmable logic controller (PLC) and insertion
The form of controller etc. realizes identical program.So system provided by the invention, device and its modules may be considered that
It is a kind of hardware component, and the knot that the module for realizing various programs for including in it can also be considered as in hardware component
Structure；It can also will be considered as realizing the module of various functions either the software program of implementation method can be Hardware Subdivision again
Structure in part.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (7)
1. a kind of isothermal heat release circulation engine, which is characterized in that including cylinder, piston, spark plug and ignition coil (3)；
The piston and spark plug are arranged in cylinder, and piston and cylinder inner wall surround to form the first space；The ignition coil (3)
It is connected with spark plug, and discharge energy and the discharge period of spark plug can be controlled；
Intake and exhaust valves are provided on the cylinder.
2. isothermal heat release circulation engine according to claim 1, which is characterized in that N number of spark plug is lighted a fire at M
It can be realized single electrode electric discharge under the control of coil (3) or multi-electrode coordinate electric discharge, wherein N and M is positive integer.
3. isothermal heat release circulation engine according to claim 1 or 2, which is characterized in that the ignition coil (3) includes
Control circuit, coil block (4), high-voltage diode (5) and high-voltage conducting wires (6)；The control circuit and coil block (4) phase
It even, and being capable of control coil component (4) electric discharge；The coil block (4) is through high-voltage diode (5) and high-voltage conducting wires (6) phase
Even；Ignition coil (3) is connected by high-voltage conducting wires (6) with spark plug.
4. a kind of isothermal heat release circulation engine control method, which is characterized in that using described in any one of any one of claims 1 to 33
Isothermal heat release circulation engine, comprising:
Combustion process step: N number of spark plug is under the control of M ignition coil (3) according to the first electric discharge strategy of setting
Electric discharge, lights the mixture of part automotive fuel and air, control of the subsequent N number of spark plug in M ignition coil (3)
Under discharge tactful continuous discharge according to the second of setting, the mixture of burn remaining automotive fuel and air realizes thermodynamics
Constant temperature process.
5. isothermal heat release circulation engine control method according to claim 4, which is characterized in that induction stroke step:
Inlet valve is opened, exhaust valve closing, by the movement of piston so that the first spatial volume increases, thus outside introducing in cylinder
Air；
Compression stroke step: intake and exhaust valves are turned off, interior by the movement of piston so that the volume in the first space reduces
The mixture of combustion engine fuel and air is compressed；
Expansion stroke step: the mixture of the automotive fuel and air that are ignited generates high temperature and high pressure gas, pushes piston fortune
It is dynamic, externally do work；
Heat rejection process step: IC Intake Valve Closes, exhaust valve are opened, constant volume heat extraction；
Exhaust stroke step: IC Intake Valve Closes, exhaust valve are opened, by piston inertia movement so that the first spatial volume reduces,
Exhaust gas is discharged.
6. isothermal heat release circulation engine control method according to claim 4 or 5, which is characterized in that described first puts
Electric tactful and the second electric discharge strategy includes any one of impulse discharge, multiple discharge and continuous discharge or multiple combinations.
7. isothermal heat release circulation engine control method according to claim 4 or 5, which is characterized in that described burned
The heat liberation rate, heat release rate of constant temperature process can be calculated by following formula in journey step:
Wherein, Q is the heat released in isothermal exothermic process,For crank angle, R is ideal gas constant, and K is constant, and S is
Top land area, V0First spatial volume when for top dead centre, λ are connecting rod ratio,Crank angle when for compression top center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811098526.2A CN109404129B (en) | 2018-09-20 | 2018-09-20 | Isothermal heat-release cycle internal combustion engine and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811098526.2A CN109404129B (en) | 2018-09-20 | 2018-09-20 | Isothermal heat-release cycle internal combustion engine and control method thereof |
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| Publication Number | Publication Date |
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| CN109404129A true CN109404129A (en) | 2019-03-01 |
| CN109404129B CN109404129B (en) | 2020-05-08 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1099100A (en) * | 1993-11-27 | 1995-02-22 | 道格拉斯·C·克鲁泽 | Internal combustion engine with limited temperature cycle |
| JP2008082181A (en) * | 2006-09-26 | 2008-04-10 | Mazda Motor Corp | Ignition control device for rotary piston engine |
| CN101435404A (en) * | 2007-11-13 | 2009-05-20 | 袁野 | Ignition combustion-supporting machine |
| CN106523227A (en) * | 2016-12-16 | 2017-03-22 | 上海理工大学 | Multi-point ignition combustion system with double spraying devices |
-
2018
- 2018-09-20 CN CN201811098526.2A patent/CN109404129B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1099100A (en) * | 1993-11-27 | 1995-02-22 | 道格拉斯·C·克鲁泽 | Internal combustion engine with limited temperature cycle |
| JP2008082181A (en) * | 2006-09-26 | 2008-04-10 | Mazda Motor Corp | Ignition control device for rotary piston engine |
| CN101435404A (en) * | 2007-11-13 | 2009-05-20 | 袁野 | Ignition combustion-supporting machine |
| CN106523227A (en) * | 2016-12-16 | 2017-03-22 | 上海理工大学 | Multi-point ignition combustion system with double spraying devices |
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| Publication number | Publication date |
|---|---|
| CN109404129B (en) | 2020-05-08 |
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