CN210622963U - Variable ignition control system and vehicle - Google Patents
Variable ignition control system and vehicle Download PDFInfo
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- CN210622963U CN210622963U CN201921402491.7U CN201921402491U CN210622963U CN 210622963 U CN210622963 U CN 210622963U CN 201921402491 U CN201921402491 U CN 201921402491U CN 210622963 U CN210622963 U CN 210622963U
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Abstract
The utility model provides a control system and vehicle of variable ignition relates to the vehicle field. The variable ignition control system comprises an acquisition module, a control module, a timing transmission device and an ignition device which are sequentially connected, wherein the acquisition module is used for acquiring parameter information of an engine and sending the parameter information to the control module, the control module is configured to calculate an optimal ignition position according to the parameter information and control the timing transmission device to move the ignition device to the optimal ignition position, and then the ignition device is controlled to ignite so that the inside of an engine cylinder is fully combusted. The timing transmission device is connected with the control module and used for starting power transmission to change the ignition position of the ignition device after receiving the conducting signal sent by the control module. The utility model discloses can change the ignition position according to the different parameter information of engine for reduce the detonation tendency in the time of the heat release rate of burning, thereby make the interior sufficient combustion of engine cylinder, improve the power take off of engine.
Description
Technical Field
The utility model relates to a vehicle field especially relates to a control system and vehicle of variable ignition.
Background
As emission regulations become more stringent, reducing fuel consumption and emissions become important issues facing various host plants. The stratified lean combustion is used as an efficient combustion mode, so that the fuel consumption and the nitrogen oxides are obviously reduced, and the development is long. In order to raise lean combustion limit, stratified mixed gas combustion mode is usually adopted to ensure that rich mixed gas which is easy to ignite is formed even if the average air-fuel ratio is more than 20, and the peripheral area is leaner mixed gas. Under the action of an air inlet channel, a combustion chamber and a piston top which are specially designed, the combustion chamber forms concentration layering with rich top and lean bottom along the axial direction at the later stage of a compression stroke. The rich mixed gas is ignited by the spark plug to form a larger fire core, and then the surrounding lean mixed gas is ignited, so that the flame propagation distance is shortened, the heat release rate is improved, and better power output is realized.
After the lean-rich mixed gas is formed, the ignition position of the spark plug directly influences the length of flame propagation distance and the combustion heat release rate, and the flame propagation distance is shortened, so that the deflagration can be effectively prevented, and the heat efficiency is improved. This is because the mixture ignites most easily and the flame propagation speed is fastest when the mixture air excess factor is about 1. When the position of the spark plug is close to that of the richer mixed gas, the spark plug is ignited more easily, flame spreads more quickly, otherwise, the mixed gas is too lean and is not easy to ignite, the flame spread distance is increased, the probability of spontaneous ignition of the wall surface of the tail end cylinder is increased, and the detonation tendency is increased. In addition, because the pre-expansion ratio of the cycle is reduced, the combustion is closer to the top dead center, and the heat efficiency of the whole machine is improved.
Therefore, it is an important research direction to keep the spark plug at the most suitable ignition position during the design process of the engine ignition system, so as to optimize the performance of the engine. Under different working conditions of the engine, the air inflow is different, the forming states of the mixed gas are different, the concentration of the mixed gas at each position is different, and the mixed gas is ignited at a proper position of the concentration of the mixed gas, so that the flame propagation speed is higher, the heat efficiency is better, and the power output is better. The current fixed ignition spark plug is widely applied in the market, and has high ignition energy, mature process and stable performance. But face a technical bottleneck, and before the industrialization of more advanced ignition technology, the variable ignition position becomes an option.
In the prior art, the traditional fixed spark plug is difficult to adapt to the requirement of layered efficient combustion, and the problem that the ignition position is inflexible and can not be rapidly and sufficiently combusted exists.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an object of first aspect is to provide a control system of variable ignition, solve among the prior art the ignition position of engine inflexible and lead to the gas mixture in the jar can not enough fully burn the problem that further abnormal conditions such as detonation took place.
The utility model discloses the further purpose of first aspect is to avoid other external factors to lead to the unusual combustion conditions to take place in the engine cylinder.
The utility model discloses the purpose of second aspect provides a vehicle.
According to the object of the first aspect of the present invention, the utility model provides a variable ignition control system, which comprises an acquisition module, a control module, a timing transmission device and an ignition device, which are connected in sequence, wherein,
the acquisition module is used for acquiring parameter information of an engine and sending the parameter information to the control module, wherein the parameter information of the engine at least comprises the oil injection quantity of the engine and the air input quantity of the engine;
the control module is connected with the acquisition module and is configured to calculate an optimal ignition position according to the parameter information, control the timing transmission device to move the ignition device to the optimal ignition position and then control the ignition device to ignite so as to enable the engine cylinder to be fully combusted, wherein the ignition device is also connected with the control module;
and the timing transmission device is connected with the control module and is used for starting power transmission to change the ignition position of the ignition device after receiving the conduction signal sent by the control module.
Optionally, the acquisition module comprises an in-cylinder pressure sensor, the in-cylinder pressure sensor is arranged in a cylinder of the engine, and the in-cylinder pressure sensor is used for detecting the in-cylinder pressure of the engine after the ignition device ignites and sending the in-cylinder pressure of the engine to the control module;
the control module is further used for adjusting the next ignition time of the ignition device when the in-cylinder pressure of the engine is judged not to be within the preset threshold pressure range.
Optionally, the method further comprises:
and the timing system is connected with the timing transmission device and used for providing power for the timing transmission device.
Optionally, the timing transmission device comprises a timing transmission wheel and a rack engaged with the timing transmission wheel;
the ignition device comprises a plurality of spark plugs and a plurality of corresponding rack rings sleeved on the spark plugs, and the rack rings are meshed with the racks;
when the timing transmission device starts power transmission, the timing transmission wheel rotates to drive the rack to move, so that the rack ring drives the spark plug to move.
Optionally, the timing transmission drives the spark plug to move in the depth direction in the engine cylinder.
Alternatively, the number of the spark plugs is three, and the three spark plugs are sequentially arranged at a preset distance.
Optionally, the acquisition module comprises:
the fuel injector sensor is used for acquiring the fuel injection quantity of the engine;
a throttle sensor for detecting an intake air amount of the engine.
According to the utility model discloses the purpose of second aspect, the utility model discloses still provide a vehicle, the vehicle mounting have the control system of variable ignition.
The utility model discloses a collection module, control module, transmission and ignition in right time calculates according to the oil spout of engine and the air input of engine and reachs best ignition position and control transmission in right time and remove ignition to best ignition position, later control ignition to ignite so that the sufficient burning in the engine cylinder. The utility model discloses in because the air input and the fuel injection quantity under the different operating mode of engine are different, can change the ignition position according to the different parameter information of engine, make it light near economic gas mixture concentration for reduce the detonation tendency when exothermic, thereby make the internal sufficient combustion of engine jar, improve the thermal efficiency of circulation, improved the power take off of engine.
The utility model discloses collection module still need detect the in-cylinder pressure of engine after the ignition, if the in-cylinder pressure that detects the engine is not then adjusting the next ignition time of ignition device in predetermineeing threshold value pressure range. The utility model discloses thereby can detect the in-cylinder pressure after the burning in the engine cylinder and adjust next ignition time, avoid leading to the unusual burning condition to take place in the engine cylinder because of other external factors, further improve the life of engine.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic connection diagram of a control system for variable ignition according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a timing transmission and an ignition device in a variable ignition control system according to an embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic connection diagram of a control system for variable ignition according to an embodiment of the present invention. As shown in fig. 1, in a particular embodiment, a control system 100 for variable ignition may generally include an acquisition module 1, a control module 2, and a timing drive 3 and an ignition 4 connected in series. The acquisition module 1 is used for acquiring parameter information of the engine and sending the parameter information to the control module 2, and the parameter information of the engine at least comprises the oil injection quantity of the engine and the air inflow of the engine. The control module 2 is connected with the acquisition module 1 and is configured to calculate an optimal ignition position according to the parameter information and control the timing transmission device 3 to move the ignition device 4 to the optimal ignition position, and then control the ignition device 4 to ignite so as to enable the engine cylinder to be fully combusted. The ignition device 4 is further connected with the control module 2, and the timing transmission device 3 is connected with the control module 2 and used for receiving a conduction signal sent by the control module 2 and then starting power transmission to change the ignition position of the ignition device 4.
The utility model discloses in because the air input and the fuel injection quantity under the different operating mode of engine are different, can change the ignition position according to the different parameter information of engine to make the sufficient burning in the engine jar, reduce the detonation tendency when accelerating the heat release rate of burning, improved the power take off of engine.
The utility model discloses the best ignition position of calculation engine that can be more accurate according to multiple influence factors such as the oil spout volume of engine, the air input of engine.
In another embodiment, the acquisition module 1 comprises an in-cylinder pressure sensor disposed in a cylinder of the engine, the in-cylinder pressure sensor being configured to detect the in-cylinder pressure of the engine after the ignition device ignites and to transmit the in-cylinder pressure of the engine to the control module 2. The control module 2 is further configured to adjust a next ignition timing of the ignition device 4 if it is determined that the in-cylinder pressure of the engine is not within the preset threshold pressure range.
Specifically, when the cylinder pressure is detected to be too high after the combustion in the engine cylinder, namely, pre-ignition or knocking can occur, the next ignition time is set back to avoid the occurrence of abnormal combustion conditions such as knocking.
The utility model discloses thereby can detect the in-cylinder pressure after the burning in the engine cylinder and adjust next ignition time, avoid appearing the unusual burning condition emergence in leading to the engine cylinder because of other factors, further improve the life of engine.
In addition, the control system for variable ignition further comprises a timing system 5 connected to the timing gear 3 for powering the timing gear 3.
In another embodiment, the timing actuator 3 is connected to the timing system 5 through a Variable Valve Timing (VVT) solenoid valve, and when the ignition position of the ignition device 4 needs to be adjusted, the VVT solenoid valve is turned on, and the timing actuator 3 starts power transmission to drive the ignition device 4 to move.
Fig. 2 is a schematic structural diagram of a timing transmission and an ignition device in a variable ignition control system according to an embodiment of the present invention. As shown in fig. 2 and referring to fig. 1, the timing drive device 3 includes a timing drive wheel 31 and a rack 32 engaged with the timing drive wheel 31. Ignition device 4 includes a plurality of spark plugs 41 and a plurality of rack rings 42 correspondingly disposed on plurality of spark plugs 41, and rack rings 42 are engaged with rack 32. Wherein, when the timing transmission device 3 starts power transmission, the timing transmission wheel 31 rotates to drive the rack 32 to move so that the rack ring 42 drives the spark plug 41 to move.
Further, the timing transmission wheel 31 is connected with the rear end face of the engine, power transmission is performed through power provided by the timing system 5, after the timing transmission wheel 31 starts to work, torque is transmitted to a rack ring 42 on the spark plug 41 through the rack 32, and the rack ring 42 drives the spark plug 41 to rotate, so that the ignition position is changed.
In one embodiment, the timing transmission 3 moves the ignition plug 41 in the depth direction in the engine cylinder. Specifically, the rack ring 42 rotates the ignition plug 41 and moves in the direction of the inside of the engine cylinder under the guidance of the rack 32.
When the engine operates under a low-load working condition, the opening of the throttle valve is small, the oil injection quantity of the oil injector is small, the pressure of an air inlet channel is lower than the atmospheric pressure, the turbulent flow formed by the mixed gas is weak, and the formed layered mixed gas is positioned at the lower position of the whole combustion chamber, so that the optimal ignition position is positioned at the lower position of the combustion chamber. After receiving the data of the oil injection quantity and the air inflow quantity, the control module 2 sends a conducting signal to the timing transmission device 3, the timing transmission wheel 31 starts power transmission to drive the spark plug 41 to be screwed in to different degrees and to increase the screwing depth through the matching of the timing transmission wheel 31 and the rack 32, and the ignition position is reduced.
When the engine runs under the heavy-load working condition, the opening of the throttle valve is large, the fuel injection quantity of the fuel injector is large, the pressure of the air inlet channel is equal to the atmospheric pressure, the turbulent flow formed by the mixed gas is strong, the distribution range is wide, and the formed mixed gas is positioned on the upper part of the whole combustion chamber, so that the optimal ignition position is positioned on the upper part of the combustion chamber. After receiving the data of the oil injection quantity and the air inflow quantity, the control module 2 sends a conducting signal to the timing transmission device 3, the timing transmission wheel 31 starts power transmission to drive the spark plug 41 to rotate in a reduced depth through the matching of the timing transmission wheel 31 and the rack 32, and the ignition position is raised.
Specifically, the acquisition module 1 comprises an oil injector sensor, a throttle sensor and an in-cylinder pressure sensor, wherein the oil injector sensor is used for acquiring the oil injection quantity of the engine. The throttle sensor is used to detect the intake air amount of the engine. The in-cylinder pressure sensor is used to detect the in-cylinder pressure of the engine and the combustion condition in the cylinder.
In one embodiment, the number of the ignition plugs 41 is three, and the three ignition plugs 41 are sequentially arranged at a predetermined distance. Here, the preset distance means that the distances between adjacent two of the three ignition plugs 41 are equal.
The utility model discloses transmission in right time 3 utilizes a drive wheel in right time 31 and a rack 32 just can drive three spark plug 41 and remove simultaneously, simple structure, and development cost is low.
The utility model also provides a vehicle, its control system who installs the variable ignition of above-mentioned any one embodiment.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.
Claims (7)
1. A variable ignition control system is characterized by comprising an acquisition module, a control module, a timing transmission device and an ignition device which are connected in sequence,
the acquisition module is used for acquiring parameter information of an engine, wherein the parameter information of the engine at least comprises the oil injection quantity of the engine and the air inflow of the engine;
the timing transmission device is connected with the control module and is used for starting force transmission under the controlled opening to change the ignition position of the ignition device;
the timing transmission device comprises a timing transmission wheel and a rack meshed with the timing transmission wheel;
the ignition device comprises a plurality of spark plugs and a plurality of corresponding rack rings sleeved on the spark plugs, and the rack rings are meshed with the racks;
when the timing transmission device starts power transmission, the timing transmission wheel rotates to drive the rack to move, so that the rack ring drives the spark plug to move.
2. The control system of claim 1,
the acquisition module comprises an in-cylinder pressure sensor, the in-cylinder pressure sensor is arranged in a cylinder of the engine, and the in-cylinder pressure sensor is used for detecting the in-cylinder pressure of the engine after the ignition device ignites.
3. The control system of claim 1, further comprising:
and the timing system is connected with the timing transmission device and used for providing power for the timing transmission device.
4. The control system of claim 1,
the timing transmission device drives the spark plug to move along the depth direction in the engine cylinder.
5. The control system of claim 1,
the number of the spark plugs is three, and the three spark plugs are sequentially arranged according to a preset distance.
6. The control system of claim 1, wherein the acquisition module comprises:
the fuel injector sensor is used for acquiring the fuel injection quantity of the engine;
a throttle sensor for detecting an intake air amount of the engine.
7. A vehicle characterized by being equipped with a variable ignition control system as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921402491.7U CN210622963U (en) | 2019-08-27 | 2019-08-27 | Variable ignition control system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921402491.7U CN210622963U (en) | 2019-08-27 | 2019-08-27 | Variable ignition control system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210622963U true CN210622963U (en) | 2020-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921402491.7U Active CN210622963U (en) | 2019-08-27 | 2019-08-27 | Variable ignition control system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210622963U (en) |
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- 2019-08-27 CN CN201921402491.7U patent/CN210622963U/en active Active
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