CN215719042U - Bypass type automobile engine catalyst converter system of igniting fast - Google Patents
Bypass type automobile engine catalyst converter system of igniting fast Download PDFInfo
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- CN215719042U CN215719042U CN202122112188.7U CN202122112188U CN215719042U CN 215719042 U CN215719042 U CN 215719042U CN 202122112188 U CN202122112188 U CN 202122112188U CN 215719042 U CN215719042 U CN 215719042U
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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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
- Y02T10/40—Engine management systems
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Abstract
The utility model relates to a bypass type automobile engine catalyst quick ignition system, which comprises an engine body, an engine controller, an exhaust pipeline and a three-way catalyst, wherein a sensor module is arranged on the engine body; the exhaust pipeline comprises an exhaust main channel and an exhaust by-pass pipe, and a main channel control valve is arranged on the exhaust main channel; and two ends of the waste gas bypass pipe are respectively connected with the waste gas main channel, and a bypass pipe control valve and a waste gas heating device are arranged on the waste gas bypass pipe. According to the utility model, the exhaust gas bypass pipe is arranged on the exhaust pipe, and the heating device is arranged on the exhaust gas bypass pipe, so that the exhaust gas is heated in a low-temperature state of the engine, and the ignition rate of the three-way catalyst is effectively improved; and switching waste gas to the main channel under high temperature state, can not increasing engine exhaust back pressure, and can avoid heating device to stand thermal shock, effectively reduced heating device's hardware cost, simple structure, the practicality is strong.
Description
Technical Field
The utility model belongs to the technical field of engine catalysts, and relates to a bypass type rapid ignition system of an automobile engine catalyst.
Background
Nowadays, the automobile emission problem is increasingly emphasized, and the automobile emission reduction is not slow at all. Because the temperature of the three-way catalytic converter is low in the cold machine running stage after the automobile engine is started, the conversion efficiency of pollutants is extremely low, and a large amount of pollutants generated by the engine are discharged into the atmosphere without being effectively converted, the pollutant discharge amount in the stage accounts for a large amount of the total discharge amount of the running automobile. As the engine runs, the heat of exhaust gas generated by combustion in the engine cylinder is gradually accumulated in the three-way catalyst, the temperature of the three-way catalyst is gradually increased, the temperature is gradually increased from the natural environment temperature to the ignition temperature (the process is called the ignition of the three-way catalyst), the temperature is quickly increased to the high-efficiency working temperature, and the conversion efficiency of the three-way catalyst to pollutants is gradually increased to the maximum conversion efficiency along with the temperature increase. Therefore, increasing the light-off rate of the three-way catalyst is an effective means to reduce cold stage pollutant emissions.
In order to improve the ignition rate of the three-way catalyst, at present, there are mainly control methods such as improving the idling speed of an engine, delaying an ignition angle and the like, and hardware schemes such as installing a heating device on an exhaust pipe or the three-way catalyst and the like. The control method for improving the idling speed of the engine and delaying the ignition angle is adopted, so that the method has a certain effect of accelerating the ignition rate, but the effect is very limited, and the method still has higher requirements on the content of noble metals in the three-way catalyst; by adopting the scheme of installing the heating device on the exhaust pipe or the three-way catalyst, the requirement on the heat resistance of the heating device is extremely high, the requirement on the heating power is higher, and the hardware cost can be greatly increased. In addition, the heating device is arranged on the main exhaust channel, so that the throttling effect on the exhaust airflow is obvious, the exhaust back pressure is increased, and the fuel economy under the heavy-load working condition is poor.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a bypass type automobile engine catalyst rapid light-off system.
In order to achieve the purpose, the utility model provides the following technical scheme:
a bypass type automobile engine catalyst rapid ignition system comprises an engine body, an engine controller, an exhaust pipeline and a three-way catalyst, wherein a sensor module is arranged on the engine body; the exhaust pipeline comprises an exhaust main channel and an exhaust by-pass pipe, one end of the exhaust main channel is connected with an exhaust port of the engine body, the other end of the exhaust main channel is connected with the three-way catalyst, the exhaust main channel is provided with a first interface and a second interface, and a main channel control valve is arranged between the first interface and the second interface; the two ends of the waste gas bypass pipe are respectively connected with the first interface and the second interface, a bypass pipe control valve and a waste gas heating device are arranged on the waste gas bypass pipe, and the engine body, the sensor module, the main channel control valve, the bypass pipe control valve and the waste gas heating device are all electrically connected with an engine controller.
Furthermore, the first interface is arranged at one end, close to the engine body, of the exhaust gas main channel, the second interface is arranged at one end, close to the three-way catalyst, of the exhaust gas main channel, the air inlet end of the exhaust gas bypass pipe is communicated with the first interface, and the air outlet end of the exhaust gas bypass pipe is communicated with the second interface.
Furthermore, the main channel control valve is arranged behind the first interface and close to the first interface.
Further, the exhaust bypass pipe control valve is located at a front end of the exhaust heater and near the first port.
Further, the sensor module includes a water temperature sensor for measuring engine coolant temperature, the water temperature sensor being electrically connected to the engine controller.
Further, the sensor module further comprises a rotation speed sensor and an intake pressure temperature sensor, the rotation speed sensor is used for measuring the crankshaft rotation speed of the engine body, the intake pressure temperature sensor is used for measuring the pressure and the temperature of fresh air entering the engine body, and the rotation speed sensor and the intake pressure temperature sensor are both electrically connected with the engine controller.
Furthermore, a heat insulation layer is arranged on the pipe wall of the waste gas bypass pipe.
Further, the exhaust gas heating device includes an exhaust gas heater provided on the exhaust gas bypass pipe, the exhaust gas heater being electrically connected to the booster, and the booster being electrically connected to the storage battery.
Furthermore, the main channel control valve and the bypass pipe control valve are both valve plate type electronic switch valves.
Further, the three-way catalyst is ignited after the temperature is increased to 350 ℃, and the conversion efficiency of the three-way catalyst reaches the peak platform after the temperature is increased to 500 ℃.
According to the utility model, the exhaust bypass pipe is arranged on the exhaust pipeline, the heating device is arranged on the exhaust bypass pipe, and the exhaust is heated in the low-temperature state of the engine by flexibly controlling the opening and closing of the main channel control valve and the bypass pipe control valve, so that the ignition rate of the three-way catalyst is effectively improved; switching waste gas to the main entrance under high temperature state, can not increasing engine exhaust back pressure, and can avoid heating device to stand thermal shock, guarantee simultaneously that exhaust back pressure and fuel economy under the engine heat engine state are not influenced, effectively reduced heating device's hardware cost, simple structure, the practicality is strong.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the utility model, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a block diagram of a preferred embodiment of the present invention.
Fig. 2 is a block diagram of another preferred embodiment of the present invention.
In the figure: 1. the engine comprises an engine body, 2, a sensor module, 3, an engine controller, 4, a main channel control valve, 5, a bypass pipe control valve, 6, an exhaust main channel, 7, an exhaust bypass pipe, 9, a three-way catalyst, 61, a first interface, 62, a second interface, 71, an insulating layer, 81, an exhaust heater, 82, a booster and 83, and a storage battery.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Example 1
As shown in fig. 1, a preferred embodiment of a bypass type automobile engine catalyst rapid ignition system of the present invention comprises an engine body 1, an engine controller 3, an exhaust line and a three-way catalyst 9, wherein the engine controller 3 is electrically connected with the engine body 1 and is used for controlling the air intake amount, the idle speed, the ignition angle and the like of the engine body 1. The engine body 1 is provided with a sensor module 2; the sensor module 2 is used for detecting parameters such as the temperature of the engine body 1, the sensor module 2 preferably includes a water temperature sensor for measuring the temperature of the engine coolant, and the water temperature sensor is electrically connected to the engine controller 3.
The exhaust pipeline comprises an exhaust main channel 6 and an exhaust bypass pipe 7, one end of the exhaust main channel 6 is connected with an exhaust port of the engine body 1, the other end of the exhaust main channel is connected with the three-way catalyst 9, the three-way catalyst 9 is used for converting pollutants in exhaust gas of the engine, when the three-way catalyst 9 does not reach the ignition temperature, the conversion efficiency is low, the conversion efficiency can be greatly improved after the ignition temperature is reached, the three-way catalyst 9 ignites after the temperature is increased to 350 ℃, and the conversion efficiency can reach a peak platform after the temperature is increased to 500 ℃. The main exhaust gas channel 6 is provided with a first connector 61 and a second connector 62, and the first connector 61 and the second connector 62 are preferably three-way connectors. A main channel control valve 4 is arranged between the first connection 61 and the second connection 62, and the main channel control valve 4 is electrically connected to the engine controller 3 for controlling whether exhaust gas flows through the exhaust gas main channel 6. The main channel control valve 4 is preferably a valve plate type electronic switching valve, and the installation position of the main channel control valve 4 is preferably adjacent to the first port 61, but the main channel control valve 4 may be installed in the middle of the exhaust main channel 6 or at a position adjacent to the second port 62.
Two ends of the exhaust gas bypass pipe 7 are respectively connected with the first connector 61 and the second connector 62, and in order to increase the heating speed of the exhaust gas in the exhaust gas bypass pipe 7, a heat insulation layer 71 is preferably arranged on the pipe wall of the exhaust gas bypass pipe 7 and used for heat insulation of the exhaust gas bypass pipe 7, so that excessive heat dissipation of the exhaust gas is avoided. And a bypass pipe control valve 5 is arranged on the waste gas bypass pipe 7, and the bypass pipe control valve 5 is electrically connected with the engine controller 3 and used for controlling whether waste gas flows through the waste gas bypass pipe 7 or not. The bypass pipe control valve 5 is preferably a valve plate type electronic switching valve, and the installation position of the bypass pipe control valve 5 is preferably adjacent to the first connection port 61.
An exhaust gas heating device is arranged between the bypass pipe control valve 5 and the second interface 62, the exhaust gas heating device is controlled by the engine controller 3 to work, when the rapid ignition function of the three-way catalyst 9 is activated, the exhaust gas flowing through the exhaust gas bypass pipe 7 is heated, and when the rapid ignition function of the three-way catalyst 9 is closed, the exhaust gas heating device stops heating. The exhaust gas heating device comprises an exhaust gas heater 81, a booster 82 and a storage battery 83, wherein the exhaust gas heater 81 is arranged on the exhaust gas bypass pipe 7, the exhaust gas heater 81 is electrically connected with the engine controller 3, the exhaust gas heater 81 is also electrically connected with the booster 82, the booster 82 is electrically connected with the storage battery 83, and the booster 82 boosts the voltage of the storage battery 83 and supplies the boosted voltage to the exhaust gas heater 81 to meet the high-power heating requirement.
The working principle of the embodiment is as follows:
when the engine is started, the engine controller 3 acquires the temperature of the coolant of the engine through a water temperature sensor; since the coolant temperature and the temperature of the exhaust gas discharged from the engine are positively correlated, whether the exhaust gas needs to be heated can be determined based on the coolant temperature. The first temperature threshold A1 may be set at the launch controller in advance (e.g., A1 may be set at 60℃.).
When the temperature of the coolant is higher than a first temperature threshold value A1 when the engine is started, the engine controller 3 opens the main passage control valve 4 and closes the bypass pipe control valve 5, and the engine exhaust gas enters the three-way catalyst 9 through the exhaust gas main passage 6; at this time, the engine controller 3 deactivates the exhaust gas heater 81.
When the temperature of the coolant at the time of engine start is lower than a first temperature threshold value a1, the engine controller 3 causes the main passage control valve 4 to close while causing the bypass pipe control valve 5 to open, and engine exhaust gas enters the three-way catalyst 9 through the exhaust bypass pipe 7; and the exhaust gas heater 81 is operated to heat the exhaust gas flowing through the exhaust gas bypass pipe 7; the three-way catalyst 9 can reach the ignition temperature quickly, and further reach the high-efficiency working temperature of the catalyst quickly, and pollutants in the waste gas can be converted quickly. When the engine controller 3 detects that the temperature of the coolant is higher than the first temperature threshold a1, it is considered that the temperature of the three-way catalyst 9 has increased to the peak platform temperature, the engine controller 3 stops the operation of the exhaust gas heater 81 and causes the bypass pipe control valve 5 to close while causing the main passage control valve 4 to open, and the engine exhaust gas no longer passes through the exhaust gas bypass pipe 7 and directly enters the three-way catalyst 9 through the exhaust gas main passage 6.
In addition, in the working process of the engine, if the engine is in a fuel cut reverse dragging state for a long time, the engine controller 3 enables the main channel control valve 4 to be closed, and simultaneously enables the bypass pipe control valve 5 to be opened, so that engine exhaust gas enters the three-way catalyst 9 through the exhaust gas bypass pipe 7; and the exhaust gas heater 81 is operated to heat the exhaust gas flowing through the exhaust gas bypass pipe 7, thereby preserving the heat of the three-way catalyst 9 and keeping the three-way catalyst 9 at the peak platform temperature. When the engine is out of the reverse-dragging state, the engine controller 3 stops the operation of the exhaust gas heater 81, closes the bypass control valve 5, and opens the main passage control valve 4, so that the engine exhaust gas does not pass through the exhaust gas bypass pipe 7 any more, but directly enters the three-way catalyst 9 through the exhaust gas main passage 6.
The embodiment innovatively provides that the exhaust bypass pipe 7 is arranged on the exhaust pipeline, the heating device is arranged on the exhaust bypass pipe 7, and the exhaust is heated in the low-temperature state of the engine by flexibly controlling the opening and closing of the main channel control valve 4 and the bypass pipe control valve 5, so that the ignition rate of the three-way catalyst 9 is effectively improved; the heating device is prevented from being subjected to thermal shock in a high-temperature state, exhaust back pressure and fuel economy of the engine in a heat engine state are not affected, and hardware cost of the heating device is effectively reduced.
Example 2
In order to further optimize the light-off control of the three-way catalyst 9 by combining the control methods of increasing the idle speed and retarding the ignition angle of the engine, the sensor module 2 of the present embodiment is added with a speed sensor for measuring the crankshaft speed of the engine body 1 and an intake pressure temperature sensor for measuring the pressure and temperature of the fresh air entering the engine body 1 on the basis of the embodiment 1, and both the speed sensor and the intake pressure temperature sensor are electrically connected with the engine controller 3.
The working principle of the embodiment is as follows:
when the engine is started, the engine controller 3 acquires the temperature of the coolant of the engine through a water temperature sensor; since the coolant temperature and the temperature of the exhaust gas discharged from the engine are positively correlated, whether the exhaust gas needs to be heated can be determined based on the coolant temperature. The first temperature threshold a1 (e.g., a1 may be set to 60 ℃), the second temperature threshold a2 (e.g., a2 may be set to 40 ℃) and the third temperature threshold A3 (e.g., A3 may be set to 10 ℃) may be set in advance at the launch controller.
When the temperature of the cooling liquid is higher than a first temperature threshold A1 when the engine is started, the temperature of the engine is higher, the three-way catalyst can quickly reach a peak platform, and quick ignition control is not needed; the engine controller 3 opens the main channel control valve 4 and closes the bypass pipe control valve 5 at the same time, and engine exhaust gas enters the three-way catalyst 9 through the exhaust gas main channel 6; at this time, the exhaust gas heater 81 is not operated, and the engine controller 3 does not additionally control the engine idle speed and the ignition angle (i.e., does not increase the engine idle speed, does not retard the ignition angle).
When the temperature of the cooling liquid is lower than a first temperature threshold A1 and higher than a second temperature threshold A2 when the engine is started, the temperature of the engine is lower, and the rapid ignition control can be performed by increasing the idle speed of the engine and retarding the ignition angle; the engine controller 3 opens the main channel control valve 4 and closes the bypass pipe control valve 5 at the same time, and engine exhaust gas enters the three-way catalyst 9 through the exhaust gas main channel 6; at this time, the exhaust gas heater 81 is not operated, and the engine controller 3 controls the engine body 1 to increase the intake air amount, increase the idling speed, and retard the ignition angle to accelerate the light-off rate of the three-way catalyst 9. When the engine controller 3 detects that the engine intake air amount integral value reaches a first intake air amount nominal value B1 (for example, B1 may be set at 2 to 3Kg) through the intake air pressure temperature sensor, it is considered that the temperature of the three-way catalyst 9 has increased to the peak platform temperature, and the engine controller 3 stops additional control over the engine idle speed and the ignition angle. The engine controller 3 increases the light-off rate of the three-way catalyst 9 by increasing the idle speed of the engine and delaying the ignition angle, which is the prior art and is not described herein.
When the temperature of the cooling liquid is lower than the second temperature threshold A2 and higher than a third temperature threshold A3 when the engine is started, the temperature of the engine is lower, and the quick ignition control can be carried out by combining the modes of heating the waste gas, increasing the idling speed of the engine and delaying the ignition angle; the engine controller 3 closes the main channel control valve 4 and opens the bypass pipe control valve 5 at the same time, and engine exhaust gas enters the three-way catalyst 9 through the exhaust gas bypass pipe 7; and the exhaust gas heater 81 is operated to heat the exhaust gas flowing through the exhaust gas bypass pipe 7; in addition, the engine controller 3 also controls the engine body 1 to increase air inflow, increase idle speed and delay ignition angle, so that the temperature of an engine cylinder and cooling liquid are increased rapidly, part of fuel oil is discharged out of the cylinder and enters an exhaust pipeline and the three-way catalyst 9 instead of being combusted in the engine cylinder, when the exhaust pipeline and the three-way catalyst 9 reach the combustion point of the fuel oil and have air, the fuel oil which is not combusted in the cylinder is subjected to afterburning, and the heat released by the afterburning combustion has a heating effect on the three-way catalyst 9, so that the three-way catalyst 9 quickly reaches the ignition temperature, further quickly reaches the high-efficiency working temperature of the catalyst, and quickly converts pollutants in exhaust gas. When the engine controller 3 detects that the integral value of the engine intake air amount reaches a second intake air amount calibration value C1 (for example, C1 can be set to be 3-5 Kg) through the intake air pressure temperature sensor, the temperature of the three-way catalyst 9 is considered to be increased to the peak platform temperature, the engine controller 3 stops the work of the exhaust gas heater 81, closes the bypass pipe control valve 5, and opens the main channel control valve 4, so that the engine exhaust gas does not pass through the exhaust gas bypass pipe 7 any more, and directly enters the three-way catalyst 9 through the exhaust gas main channel 6.
When the temperature of the cooling liquid is lower than a third temperature threshold A3 when the engine is started, the temperature of the engine is too low, and the quick ignition control is not carried out; the engine controller 3 opens the main channel control valve 4 and closes the bypass pipe control valve 5 at the same time, and engine exhaust gas enters the three-way catalyst 9 through the exhaust gas main channel 6; at this time, the exhaust gas heater 81 is not operated, and the engine controller 3 does not additionally control the engine idle speed and the ignition angle.
In addition, in the working process of the engine, if the engine is in a fuel cut reverse dragging state for a long time, the engine controller 3 enables the main channel control valve 4 to be closed, and simultaneously enables the bypass pipe control valve 5 to be opened, so that engine exhaust gas enters the three-way catalyst 9 through the exhaust gas bypass pipe 7; and the exhaust gas heater 81 is operated to heat the exhaust gas flowing through the exhaust gas bypass pipe 7, thereby preserving the heat of the three-way catalyst 9 and keeping the three-way catalyst 9 at the peak platform temperature. When the engine is out of the reverse-dragging state, the engine controller 3 stops the operation of the exhaust gas heater 81, closes the bypass control valve 5, and opens the main passage control valve 4, so that the engine exhaust gas does not pass through the exhaust gas bypass pipe 7 any more, but directly enters the three-way catalyst 9 through the exhaust gas main passage 6.
The traditional control method for improving the idling speed of the engine and delaying the ignition angle is reserved, the exhaust gas bypass pipe 7 is installed on the exhaust pipeline, the heating device is arranged on the exhaust gas bypass pipe 7, and the control mode is more flexible.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (10)
1. A bypass type automobile engine catalyst rapid ignition system is characterized by comprising an engine body, an engine controller, an exhaust pipeline and a three-way catalyst, wherein a sensor module is arranged on the engine body; the exhaust pipeline comprises an exhaust main channel and an exhaust by-pass pipe, one end of the exhaust main channel is connected with an exhaust port of the engine body, the other end of the exhaust main channel is connected with the three-way catalyst, the exhaust main channel is provided with a first interface and a second interface, and a main channel control valve is arranged between the first interface and the second interface; the two ends of the waste gas bypass pipe are respectively connected with the first interface and the second interface, a bypass pipe control valve and a waste gas heating device are arranged on the waste gas bypass pipe, and the engine body, the sensor module, the main channel control valve, the bypass pipe control valve and the waste gas heating device are all electrically connected with an engine controller.
2. The bypass-type rapid light-off system for an automobile engine catalyst as recited in claim 1, wherein the first port is disposed at an end of the main exhaust passage adjacent to the engine body, the second port is disposed at an end of the main exhaust passage adjacent to the three-way catalyst, an inlet end of the exhaust bypass pipe is communicated with the first port, and an outlet end of the exhaust bypass pipe is communicated with the second port.
3. The bypass type automotive engine catalyst rapid light-off system as set forth in claim 2, characterized in that said main passage control valve is provided at a position rearward and close to said first port.
4. The bypass-type automotive engine catalyst rapid light-off system of claim 2, characterized in that the exhaust bypass pipe control valve is located at a front end of the exhaust heater near the first port.
5. The bypass type automotive engine catalyst rapid light-off system according to claim 1, wherein the sensor module comprises a water temperature sensor for measuring an engine coolant temperature, the water temperature sensor being electrically connected to an engine controller.
6. The bypass type automotive engine catalyst rapid light-off system according to claim 5, characterized in that the sensor module further comprises a rotation speed sensor for measuring the crankshaft rotation speed of the engine block and an intake pressure temperature sensor for measuring the pressure and temperature of the fresh air entering the engine block, both the rotation speed sensor and the intake pressure temperature sensor being electrically connected with the engine controller.
7. The bypass type automobile engine catalyst rapid ignition system according to claim 1, wherein a thermal insulation layer is arranged on a pipe wall of the exhaust bypass pipe.
8. The bypass-type automotive engine catalyst rapid light-off system according to claim 1, characterized in that the exhaust gas heating means comprises an exhaust gas heater provided on the exhaust gas bypass pipe, a booster electrically connected to the booster, and a storage battery.
9. The bypass type automobile engine catalyst rapid light-off system according to claim 1, wherein the main passage control valve and the bypass pipe control valve are both valve plate type electronic switch valves.
10. The bypass type rapid light-off system for an automobile engine catalyst according to claim 1, wherein the three-way catalyst is ignited after the temperature is raised to 350 ℃, and the conversion efficiency reaches the peak plateau after the temperature is raised to 500 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122112188.7U CN215719042U (en) | 2021-09-02 | 2021-09-02 | Bypass type automobile engine catalyst converter system of igniting fast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122112188.7U CN215719042U (en) | 2021-09-02 | 2021-09-02 | Bypass type automobile engine catalyst converter system of igniting fast |
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| Publication Number | Publication Date |
|---|---|
| CN215719042U true CN215719042U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122112188.7U Active CN215719042U (en) | 2021-09-02 | 2021-09-02 | Bypass type automobile engine catalyst converter system of igniting fast |
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| CN (1) | CN215719042U (en) |
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2021
- 2021-09-02 CN CN202122112188.7U patent/CN215719042U/en active Active
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