CN214836630U - Exhaust system and vehicle - Google Patents
Exhaust system and vehicle Download PDFInfo
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- CN214836630U CN214836630U CN202120127962.9U CN202120127962U CN214836630U CN 214836630 U CN214836630 U CN 214836630U CN 202120127962 U CN202120127962 U CN 202120127962U CN 214836630 U CN214836630 U CN 214836630U
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Abstract
The utility model discloses an exhaust system uses the vehicle, include: the exhaust system comprises a first exhaust pipe, a second exhaust pipe, an exhaust tail pipe arranged on a vehicle and an exhaust manifold communicated with a cylinder body of an engine of the vehicle; the first exhaust pipe comprises a first inlet end and a first outlet end, the second exhaust pipe comprises a second inlet end and a second outlet end, the first inlet end and the second inlet end are respectively communicated with the exhaust manifold, and the first outlet end and the second outlet end are respectively communicated with the exhaust tail pipe; the first exhaust pipe is provided with a particle filter which is used for filtering particle emissions in the first exhaust pipe; a first exhaust valve is arranged at the first inlet end, and a second exhaust valve is arranged at the second inlet end; the engine comprises a cold machine working condition and a warm-up working condition, wherein under the cold machine working condition, the first exhaust valve is opened, the second exhaust valve is closed, under the warm-up working condition, the first exhaust valve is closed, and the second exhaust valve is opened, so that the problem that the PN emission standard and the engine power performance are difficult to meet by the exhaust system at the same time is solved.
Description
Technical Field
The utility model belongs to the technical field of the vehicle, concretely relates to exhaust system and vehicle.
Background
With the stricter vehicle emission regulations, the emission standard of pollutant of motor vehicles in the sixth stage of the country is increased, the emission standard of the amount (PN) of particulate matters discharged by an engine is increased, and in order to reduce the emission of the particulate matters, a device capable of filtering the particulate matters is installed in an exhaust system of the existing vehicle engine.
In an exhaust system of an engine, exhaust back pressure directly affects the power performance of the engine, the greater the exhaust back pressure, the greater the exhaust resistance and the lower the power performance of the engine, but the installation of a device for filtering particles increases the back pressure of the engine. Therefore, it is difficult for the existing exhaust system of the engine to satisfy both the PN emission standard and the engine power performance.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide an exhaust system and vehicle can solve the exhaust system of current engine and hardly satisfy the problem of the power performance of PN's emission standard and engine simultaneously.
In order to solve the technical problem, the utility model discloses a realize like this:
the embodiment of the utility model provides a vehicle is applied to the vehicle, exhaust system includes: a first exhaust pipe, a second exhaust pipe, a tail pipe disposed on the vehicle, and an exhaust manifold in communication with an engine block of the vehicle;
the first exhaust pipe comprises a first inlet end and a first outlet end, the second exhaust pipe comprises a second inlet end and a second outlet end, the first inlet end and the second inlet end are respectively communicated with the exhaust manifold, and the first outlet end and the second outlet end are respectively communicated with the exhaust tail pipe;
the first exhaust pipe is provided with a particle filter which is used for filtering particle emissions in the first exhaust pipe;
a first exhaust valve is arranged at the first inlet end, and a second exhaust valve is arranged at the second inlet end;
the engine comprises a cold machine working condition and a warm working condition, the first exhaust valve is opened under the cold machine working condition, the second exhaust valve is closed under the warm working condition, the first exhaust valve is closed, and the second exhaust valve is opened.
Further, the exhaust system further comprises a first tee pipe;
the first three-way pipe comprises a first air inlet, a first air outlet and a second air outlet, and the first air inlet is respectively communicated with the first air outlet and the second air outlet;
the first air inlet is communicated with the exhaust manifold, the first air outlet is communicated with the first inlet end, and the second air outlet is communicated with the second inlet end.
Further, the exhaust system further comprises a second tee pipe;
the second three-way pipe comprises a second air inlet, a third air inlet and a third air outlet, and the second air inlet and the third air inlet are respectively communicated with the third air outlet;
the first outlet end is communicated with the second air inlet, the second outlet end is communicated with the third air inlet, and the third air outlet is communicated with the tail pipe.
Further, the diameter of the first exhaust pipe is larger than the diameter of the second exhaust pipe.
Further, the first exhaust pipe and the second exhaust pipe are arranged in parallel.
Further, the particle filter is disposed at a middle portion of the first exhaust pipe.
Further, the first exhaust valve and the second exhaust valve are manual one-way valves or electric one-way valves.
Further, the exhaust passage further includes a controller;
the controller is arranged on the vehicle, is electrically connected with the first exhaust valve and the second exhaust valve and is used for controlling the opening and closing of the first exhaust valve and the second exhaust valve.
Further, the particulate filter is a particulate trap.
The embodiment of the utility model provides a vehicle is still provided, the vehicle includes above-mentioned exhaust system.
To sum up, the embodiment of the utility model provides an exhaust system have following advantage at least:
in the embodiment of the present invention, the particulate filter is disposed on the first exhaust pipe, the particulate filter can filter particulate matters in the first exhaust pipe, the first exhaust valve is disposed at the inlet end of the first exhaust pipe, the second exhaust valve is disposed at the inlet end of the second exhaust pipe, the first exhaust valve is opened and the second exhaust valve is closed under the cold machine working condition of the engine, at this time, gas discharged from the engine can only be discharged through the first exhaust pipe, and thus, the emission of particulate matters can be greatly reduced; under the warm-up operating mode of engine, first blast valve is closed, and the second blast valve is opened, and at this moment, the engine combustion gas only can be discharged through the second blast pipe, because the second passageway does not set up particulate filter again, consequently, can reduce the backpressure of engine when the warm-up operating mode to improve the power performance of engine, it is visible, the engine can satisfy the emission standard of PN and the power performance of engine simultaneously under cold machine operating mode and warm-up operating mode.
Drawings
Fig. 1 is a schematic structural diagram of an exhaust system according to an embodiment of the present invention.
Description of reference numerals:
10-exhaust manifold, 20-first exhaust pipe, 21-first inlet end, 22-first outlet end, 23-first exhaust valve, 24-particulate filter, 30-second exhaust pipe, 31-second inlet end, 32-second outlet end, 33-second exhaust valve, 40-exhaust tail pipe, 50-first tee pipe, 51-first air inlet, 52-first air outlet, 53-second air outlet, 60-second tee pipe, 61-second air inlet, 62-third air inlet, 63-third air outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The terms "first," "second," and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention may be practiced in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
In an exhaust system of the existing engine, the backpressure of the engine is smaller under the working condition of a cold machine, but the discharge of PN is more; under the warm-up working condition of the engine, the PN emission is small, but the backpressure of the engine is large, so that the exhaust system of the existing engine is difficult to simultaneously meet the PN emission standard and the power performance of the engine under different working conditions.
The following describes a vehicle according to an embodiment of the present invention in detail through specific embodiments and application scenarios thereof with reference to the accompanying drawings.
The embodiment of the present invention provides an exhaust system, which can be applied to a vehicle, and referring to fig. 1, fig. 1 shows a schematic structural diagram of the exhaust system according to the embodiment of the present invention, and the exhaust system specifically includes a first exhaust pipe 20, a second exhaust pipe 30, a tail pipe 40 disposed on the vehicle, and an exhaust manifold 10 communicated with an engine cylinder block of the vehicle; the first exhaust pipe 20 includes a first inlet end 21 and a first outlet end 22, the second exhaust pipe 30 includes a second inlet end 31 and a second outlet end 32, the first inlet end 21 and the second inlet end 31 are respectively communicated with the exhaust manifold 10, and the first outlet end 22 and the second outlet end 32 are respectively communicated with the tail pipe 40; the first exhaust pipe 20 is provided with a particle filter 24, and the particle filter 24 is used for filtering particle emissions in the first exhaust pipe 20; a first exhaust valve 23 is arranged on the first inlet end 21, and a second exhaust valve 33 is arranged on the second inlet end 31; wherein, the engine includes cold machine operating mode and warm-up operating mode, and under cold machine operating mode, first exhaust valve 23 opens, and second exhaust valve 33 closes, and under warm-up operating mode, first exhaust valve 23 closes, and second exhaust valve 33 opens.
In practice, the exhaust manifold 10 is connected to the engine block and collects the exhaust gases from the cylinders into an exhaust manifold with diverging lines, and fig. 1 shows only the exhaust manifold of the exhaust manifold 10 and does not show the diverging lines.
Specifically, as shown in fig. 1, the first exhaust pipe 20 includes a first inlet end 21 and a first outlet end 22, the second exhaust pipe 30 includes a second inlet end 31 and a second outlet end 32, the first inlet end 21 and the second inlet end 31 are respectively communicated with the outlet end of the exhaust manifold 10, and the first outlet end 22 and the second outlet end 32 are respectively communicated with the tail pipe 40, that is, during the operation of the vehicle, the gas exhausted from the engine is exhausted to the outside through the exhaust manifold 10, the first exhaust pipe 20 (the second exhaust pipe 30) and the tail pipe 40 in sequence.
Specifically, because the engine discharges more particulate matter and the exhaust back pressure of the engine is lower under the cold condition, the embodiment provides the particulate filter 24 on the first exhaust pipe 20, and opens the first exhaust valve 23, and closes the second exhaust valve 33, that is, as shown in fig. 1, the gas discharged from the exhaust manifold 10 can only flow into the first exhaust pipe 20 and then is discharged through the exhaust tail pipe 40, and the particulate filter 24 can capture or filter the particulate matter of the gas in the first exhaust pipe 20 before discharging, so that the particulate matter number (PN) of the engine under the cold condition can be reduced to meet the pollutant discharge standard of the national sixth-stage motor vehicle, and the dynamic performance of the engine can also be met.
Specifically, since the exhaust of particulate matter is small in the warm-up condition of the engine, but the back pressure of the engine is large, and the particulate filter 24 increases the back pressure of the engine, the present embodiment does not provide the particulate filter 24 in the second exhaust pipe 30, and closes the first exhaust valve 23 and opens the second exhaust valve 33, that is, as shown in fig. 1, the exhaust gas discharged from the exhaust manifold 10 can only flow into the second exhaust pipe 30 and is discharged through the exhaust tail pipe 40.
It should be noted that the cold and warm working conditions can be judged by parameters such as engine water temperature, rotation speed and load, for example: the water temperature is above 100 ℃, the rotating speed is above 3500r/min, and the load is above 80% of the rated load, which can be judged as the warm-up working condition of the engine, and of course, the specific judgment parameters of the cold and warm-up working conditions in the embodiment can be defined according to the factors such as the model and the brand of the vehicle without limitation.
In the embodiment of the present invention, as shown in fig. 1, the exhaust system may further include a first three-way pipe 50; the first tee pipe 50 comprises a first air inlet 51, a first air outlet 52 and a second air outlet 53, wherein the first air inlet 51 is communicated with the first air outlet 52 and the second air outlet 53 respectively; the first air inlet 51 communicates with the exhaust manifold 10, the first air outlet 52 communicates with the first inlet port 21, and the second air outlet 53 communicates with the second inlet port 31.
Specifically, in order to make the exhaust gas of the exhaust manifold 10 flow into the first exhaust pipe 20 and/or the second exhaust pipe 30, a first tee pipe 50 is provided in the present embodiment, as shown in fig. 1, the first tee pipe 50 may include one gas inlet (a first gas inlet 51) and two gas outlets (a first gas outlet 52 and a second gas outlet 53), the first gas inlet 51 may be communicated with the exhaust manifold 10, the first gas outlet 52 may be communicated with the first inlet end 21, and the second gas outlet 53 may be communicated with the second inlet end 31, for example, in a cold condition of the engine, the gas exhausted from the exhaust manifold 10 flows into the first exhaust pipe 20 through the first gas inlet 51 and the first gas outlet 52 in sequence, and then is exhausted through the tail pipe 40; in the warm-up condition of the engine, the gas discharged from the exhaust manifold 10 flows into the second exhaust pipe 30 through the first air inlet 51 and the second air outlet 53 in sequence, and is discharged through the tail pipe 40.
Further, as shown in fig. 1, the exhaust system further includes a second tee 60; the second three-way pipe 60 comprises a second air inlet 61, a third air inlet 62 and a third air outlet 63, and the second air inlet 61 and the third air inlet 62 are respectively communicated with the third air outlet 63; the first outlet port 22 communicates with the second inlet port 61, the second outlet port 32 communicates with the third inlet port 62, and the third outlet port 63 communicates with the tail pipe 40.
Specifically, in order to collect the gas in the first exhaust pipe 20 and the second exhaust pipe 30 into the tail pipe 40, a second tee pipe 60 is further provided in the present embodiment, as shown in fig. 1, the second tee pipe 60 may include two gas inlets (a second gas inlet 61 and a third gas inlet 62) and one gas outlet (a third gas outlet 63), the first outlet end 22 is communicated with the second gas inlet 61, the second outlet end 32 is communicated with the third gas inlet 62, and the third gas outlet 63 is communicated with the tail pipe 40. For example, in a cold condition of the engine, the gas in the first exhaust pipe 20 is discharged through the second gas inlet 61, the third gas outlet 63 and the tail pipe 40 in sequence, and in a warm condition of the engine, the gas in the second exhaust pipe 30 is discharged through the third gas inlet 62, the third gas outlet 63 and the tail pipe 40 in sequence.
In the embodiment of the present invention, as shown in fig. 1, the diameter of the first exhaust pipe 20 is larger than that of the second exhaust pipe 30.
Specifically, most of the particulate matters discharged by the engine are generated under the cold condition of the engine, and the backpressure of the engine under the cold condition is small, so that only the discharge of the particulate matters needs to be reduced, and thus, the diameter of the first exhaust pipe 20 can be set to be larger in the embodiment, and the particulate filter 24 can filter more particulate emissions, so that the PN can meet the pollutant discharge standard of the motor vehicle in the sixth stage of the country.
Specifically speaking, the engine is under the warm-up operating mode, because the emission of particulate matter is less, and the backpressure of engine is great, consequently, only need consider to reduce the backpressure of engine, like this, this embodiment can not only improve the dynamic performance of engine with less some of the internal diameter setting of first exhaust pipe 20, can also reduce cost and occupation space.
In the embodiment of the present invention, as shown in fig. 1, the first exhaust pipe 20 and the second exhaust pipe 30 are arranged in parallel.
Specifically, in order to save the occupied space of the exhaust system, the two exhaust pipes are arranged in parallel in the present embodiment, of course, the parallel arrangement is only a preferable scheme, the specific arrangement positions of the two exhaust pipes in the present embodiment may not be limited, and the specific arrangement mode may be flexibly set according to the space of the vehicle.
In the embodiment of the present invention, as shown in fig. 1, the particulate filter 24 may be disposed at a middle portion of the first exhaust pipe 20.
Specifically, in order to enable the particulate filter 24 to filter or capture more particulate matters, the particulate filter 24 may be disposed in the middle of the first exhaust pipe 20 in the present embodiment, and of course, the specific position of the particulate filter 24 may not be limited in the present embodiment, and may be specifically disposed according to the specific shape of the first exhaust pipe 20, for example: as shown in fig. 1, if the pipe diameters of the inlet end and the outlet end of the first exhaust pipe 20 are small and the pipe diameter of the middle portion is large, the particulate filter 24 may be disposed at the middle portion of the first exhaust pipe 20; if the pipe diameter of the inlet end of the first exhaust pipe 20 is large and other portions are small, the particulate filter 24 may be disposed near the first inlet end 21.
In the embodiment of the present invention, the first exhaust valve 23 and the second exhaust valve 33 may be manual check valves or electric check valves.
Specifically, the check valve is also called a check valve or a check valve, and is used for a valve body for preventing compressed air from reversely flowing in a pneumatic system. The first exhaust valve 23 and the second exhaust valve 33 may be manual check valves or electric check valves, the specific structure of the check valve may not be limited in this embodiment, and may be specifically set according to actual conditions, and the two exhaust valves may be straight-through type or right-angle type.
In a preferred embodiment of the present invention, in case that the first exhaust valve 23 and the second exhaust valve 33 are electric check valves, the exhaust system further comprises a controller; a controller may be provided on the vehicle and electrically connected to the first and second exhaust valves 23 and 33, and the controller may control opening and closing of the first and second exhaust valves 23 and 33.
It should be noted that the controller may be a vehicle body controller on the vehicle, or may also be a separately arranged controller, and a specific arrangement form may be set according to an actual requirement, which may not be limited in this embodiment.
In an embodiment of the present invention, the particulate filter 24 is a particulate trap.
Preferably, the Particulate filter 24 of the present embodiment may be a Particulate trap, and the Particulate trap GPF (gasoline Particulate Filter) is a ceramic filter installed in the exhaust system of a gasoline engine that captures Particulate emissions before they enter the atmosphere. Of course, the device is not limited to a GPF as long as it can capture or filter particulate emissions.
To sum up, the embodiment of the utility model provides an exhaust system have following advantage at least:
in the embodiment of the present invention, the particulate filter is disposed on the first exhaust pipe, the particulate filter can filter particulate matters in the first exhaust pipe, the first exhaust valve is disposed at the inlet end of the first exhaust pipe, the second exhaust valve is disposed at the inlet end of the second exhaust pipe, the first exhaust valve is opened and the second exhaust valve is closed under the cold machine working condition of the engine, at this time, gas discharged from the engine can only be discharged through the first exhaust pipe, and thus, the emission of particulate matters can be greatly reduced; under the warm-up operating mode of engine, first blast valve is closed, and the second blast valve is opened, and at this moment, the engine combustion gas only can be discharged through the second blast pipe, because the second passageway does not set up particulate filter again, consequently, can reduce the backpressure of engine when the warm-up operating mode to improve the power performance of engine, it is visible, the engine can satisfy the emission standard of PN and the power performance of engine simultaneously under cold machine operating mode and warm-up operating mode.
In the embodiment of the utility model provides an in, still provide a vehicle, the vehicle includes above-mentioned exhaust system.
Specifically, the specific structure and principle of the exhaust system have been described in detail, and are not described in detail herein.
The embodiment of the utility model provides a vehicle have following advantage at least:
in the embodiment of the present invention, the vehicle includes an exhaust system, in the exhaust system, the particulate filter is disposed on the first exhaust pipe, the particulate filter can filter particulate matters in the first exhaust pipe, the first exhaust valve is disposed at the inlet end of the first exhaust pipe, the second exhaust valve is disposed at the inlet end of the second exhaust pipe, the first exhaust valve is opened and the second exhaust valve is closed under the working condition of the cold machine of the engine of the vehicle, at this time, gas discharged from the engine can only be discharged through the first exhaust pipe, so that the emission of the particulate matters can be greatly reduced; the engine of vehicle is under the warm-up operating mode, and first blast valve is closed, and the second blast valve is opened, and at this moment, the engine combustion gas only can be discharged through the second blast pipe, because the second passageway does not set up particulate filter again, consequently, can reduce the backpressure of engine when the warm-up operating mode to improve the dynamic behavior of engine, it is visible, the engine can satisfy the emission standard of PN and the dynamic behavior of engine simultaneously under cold machine operating mode and warm-up operating mode.
The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention.
Claims (10)
1. An exhaust system for a vehicle, comprising: a first exhaust pipe, a second exhaust pipe, a tail pipe disposed on the vehicle, and an exhaust manifold in communication with an engine block of the vehicle;
the first exhaust pipe comprises a first inlet end and a first outlet end, the second exhaust pipe comprises a second inlet end and a second outlet end, the first inlet end and the second inlet end are respectively communicated with the exhaust manifold, and the first outlet end and the second outlet end are respectively communicated with the exhaust tail pipe;
the first exhaust pipe is provided with a particle filter which is used for filtering particle emissions in the first exhaust pipe;
a first exhaust valve is arranged at the first inlet end, and a second exhaust valve is arranged at the second inlet end;
the engine comprises a cold machine working condition and a warm working condition, the first exhaust valve is opened under the cold machine working condition, the second exhaust valve is closed under the warm working condition, the first exhaust valve is closed, and the second exhaust valve is opened.
2. The exhaust system of claim 1, further comprising a first tee;
the first three-way pipe comprises a first air inlet, a first air outlet and a second air outlet, and the first air inlet is respectively communicated with the first air outlet and the second air outlet;
the first air inlet is communicated with the exhaust manifold, the first air outlet is communicated with the first inlet end, and the second air outlet is communicated with the second inlet end.
3. The exhaust system of claim 2, further comprising a second tee;
the second three-way pipe comprises a second air inlet, a third air inlet and a third air outlet, and the second air inlet and the third air inlet are respectively communicated with the third air outlet;
the first outlet end is communicated with the second air inlet, the second outlet end is communicated with the third air inlet, and the third air outlet is communicated with the tail pipe.
4. The exhaust system of claim 1, wherein a diameter of the first exhaust pipe is larger than a diameter of the second exhaust pipe.
5. The exhaust system according to claim 1 or 4, characterized in that the first exhaust pipe is arranged in parallel with the second exhaust pipe.
6. The exhaust system according to claim 1, wherein the particulate filter is provided at a middle portion of the first exhaust pipe.
7. The exhaust system of claim 1, wherein the first exhaust valve, the second exhaust valve are manual one-way valves or electric one-way valves.
8. The exhaust system of claim 5, further comprising: a controller;
the controller is arranged on the vehicle, is electrically connected with the first exhaust valve and the second exhaust valve and is used for controlling the opening and closing of the first exhaust valve and the second exhaust valve.
9. An exhaust system according to claim 1, wherein the particulate filter is a particulate trap.
10. A vehicle characterized by comprising an exhaust system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120127962.9U CN214836630U (en) | 2021-01-18 | 2021-01-18 | Exhaust system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120127962.9U CN214836630U (en) | 2021-01-18 | 2021-01-18 | Exhaust system and vehicle |
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| Publication Number | Publication Date |
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| CN214836630U true CN214836630U (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120127962.9U Active CN214836630U (en) | 2021-01-18 | 2021-01-18 | Exhaust system and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126587A (en) * | 2022-07-11 | 2022-09-30 | 浙江吉利控股集团有限公司 | Wading safety protection device and method |
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2021
- 2021-01-18 CN CN202120127962.9U patent/CN214836630U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126587A (en) * | 2022-07-11 | 2022-09-30 | 浙江吉利控股集团有限公司 | Wading safety protection device and method |
| CN115126587B (en) * | 2022-07-11 | 2024-01-02 | 浙江吉利控股集团有限公司 | Wading safety protection device and method |
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