CN210889149U - Engine unit with secondary air system - Google Patents
Engine unit with secondary air system Download PDFInfo
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- CN210889149U CN210889149U CN201921803988.XU CN201921803988U CN210889149U CN 210889149 U CN210889149 U CN 210889149U CN 201921803988 U CN201921803988 U CN 201921803988U CN 210889149 U CN210889149 U CN 210889149U
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- secondary air
- engine unit
- air system
- air
- crankcase
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Abstract
The utility model relates to an engine unit with a secondary air system, which comprises a cylinder head, a crankcase, a cylinder and a secondary air system. The secondary air system comprises an air cut-off valve, a first air pipe and a second air pipe, wherein the air cut-off valve is fixedly arranged on one of the crankcase, the crankcase cover, the cylinder and the cylinder head and used for cutting off negative pressure of air inlet, the first air pipe is connected to at least one reed valve cover through the air cut-off valve, and the second air pipe is connected to an air filter through the air cut-off valve. When the engine unit is viewed from above, the secondary air system is arranged on any one of the left side and the right side of the engine unit, and the secondary air system is positioned in the range of the outermost edge of at least one crankcase cover. Therefore, the utility model discloses the purification efficiency of vehicle exhaust system can be maintained to the one side, and the overall structure size of engine is dwindled to the one side, is an optimal design really.
Description
Technical Field
The present invention relates to an engine unit with a secondary air system, and more particularly to an engine unit with a secondary air system suitable for a vehicle engine.
Background
In recent years, due to the requirements of regulations, the emission exhaust gas standards of vehicles are becoming more and more stringent. In order to purify the exhaust gases emitted by the engine, many vehicles choose to add a secondary air system.
However, in order to optimize the ergonomics of the vehicle, obtain better vehicle handling performance and more comfortable ergonomics, it is necessary to reduce the overall size of the engine unit inside the vehicle housing. If the above-mentioned limit conditions are met, the secondary air system configuration of the engine must be optimized.
The inventor is concerned with the spirit of active creation, and needs to find an engine unit with a secondary air system that can solve the above problems, and the present invention is completed after several research experiments.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an utensil secondary air system's engine unit, through the utility model discloses secondary air system's configuration mode effectively utilizes the space of engine unit both sides to set up secondary air system, and the purification efficiency of vehicle exhaust system can be maintained to the one side, and the engine overall structure size is dwindled to the one side, is an optimal design in fact.
To achieve the above object, the engine unit with secondary air system of the present invention comprises a cylinder head, a crankcase, a cylinder and a secondary air system. The crankcase is provided with a crankshaft rotating along the center of the crankshaft, and the cover is provided with at least one crankcase cover; the cylinder is connected with the crankcase; the cylinder head is connected with the cylinder and comprises at least one combustion chamber, the cylinder head cover is provided with a cylinder head cover, and the cylinder head cover is provided with at least one reed valve cover which contains at least one reed valve; the secondary air system comprises an air cut-off valve, a first air pipe and a second air pipe, wherein the air cut-off valve is fixedly arranged on one of the crankcase, the crankcase cover, the cylinder and the cylinder head and used for cutting off negative pressure of air inlet, the first air pipe is connected to at least one reed valve cover through the air cut-off valve, and the second air pipe is connected to an air filter through the air cut-off valve.
When the engine unit is viewed from above, the secondary air system is arranged on any one of the left side and the right side of the engine unit, and the secondary air system is positioned in the range of the outermost edge of at least one crankcase cover. That is, the utility model discloses properly utilize the space of engine unit both sides to set up the secondary air system, as long as secondary air system's air block valve, first air pipe and second air pipe do not exceed the outermost edge of both sides bent axle case lid, can avoid appearing excessive lengthy or scattered pipe distribution, effectively promote the space utilization of whole car to this whole size of reducing the engine.
When the at least one reed valve cap is a multi-reed valve cap, the first air tube may be connected to each reed valve cap in multiple portions by an air shut-off valve with an adapter. Therefore, the adapter is a multi-branch adapter, so that each reed valve cover can be connected with the air cut-off valve.
The engine unit with the secondary air system can be positioned in front of the center of the crankshaft if the engine unit is observed from the left side or the right side; the engine unit with the secondary air system may be located behind the air cleaner when viewed from the left or right side of the engine unit. That is, the utility model discloses a secondary air system sets up in air cleaner and between the bent axle center, under this framework, the utility model discloses will present the configuration structure of optimization, reduce the waste that the space used.
The foregoing summary, as well as the following detailed description, is exemplary in nature and is intended to further illustrate the claimed invention. Other objects and advantages of the present invention will become apparent from the following description and the accompanying drawings.
Drawings
Fig. 1 is a top view of an engine unit with a secondary air system according to a preferred embodiment of the present invention.
Fig. 2 is a side view of an engine unit with a secondary air system according to a preferred embodiment of the present invention.
Fig. 3 is a perspective view of an engine unit with a secondary air system according to a preferred embodiment of the present invention.
Description of the main element symbols:
1 Engine Unit
2 Cylinder head
21 cylinder head cover
22 reed valve cover
3 crankcase
31 crankcase cover
4 cylinder
5 Secondary air System
50 adapter
51 air shut-off valve
52 first air pipe
53 second air pipe
6 air filter
Center of C crankshaft
Detailed Description
Fig. 1 to fig. 3 are a top view, a side view and a perspective view of an engine unit with a secondary air system according to a preferred embodiment of the present invention. The figure shows an engine unit 1 with a secondary air system, which mainly comprises a cylinder head 2, a crankcase 3, a cylinder 4, a secondary air system 5 and an air filter 6 arranged in front of the cylinder head 2, wherein the number of the cylinders 4 is not limited to singular number, and can also be a plurality of arrangement combinations.
In the present embodiment, the cylinder head 2 is located at the front section of the engine unit 1, connected to the cylinder 4, and includes at least one combustion chamber, and the cylinder head cover 21 is provided with a cylinder head cover 21, and the cylinder head cover 21 is provided with two reed valve covers 22, each of which includes at least one reed valve therein, for transmitting the explosion kinetic energy of the combustion chamber to the crankshaft. The crankcase 3 is located at the rear of the engine unit 1, connected to the cylinder 4, and houses a crankshaft rotating along a crankshaft center C, and is covered with a crankcase cover 31 on each of the left and right sides to form a case space of the crankcase 3.
The secondary air system 5 of the present invention includes an air shut-off valve 51, a first air pipe 52 and a second air pipe 53, and in this embodiment, as shown in fig. 2, the secondary air system 5 is located in front of the crankshaft center C when viewed from the left or right side of the engine unit 1; likewise, the secondary air system 5 is located behind the air cleaner 6 as viewed from the left or right side of the engine unit 1. That is, the utility model discloses a secondary air system sets up in air cleaner 6 and between bent axle center C, under this framework, the utility model discloses will present the configuration structure of optimization, reduce the waste that the space used.
The air shut-off valve 51 of the present embodiment is fixed to the crankcase 3, but not limited thereto, and may be fixed to one of the crankcase cover 31, the cylinder 4 and the cylinder head 2, so that the air shut-off valve 51 and the engine unit 1 have a connection relationship to help the engine unit 1 shut off the intake negative pressure.
Next, the secondary air system 5 connects the air shut-off valve 51 and the two-reed valve cover 22 by the first air pipe 52. In the embodiment, since the number of the reed valve covers 22 is greater than one, the first air tube 52 needs to be provided with an adapter 50 to connect the first air tube 52 to each reed valve cover 22 by dividing the first air tube into two parts from the air stop valve 51, wherein the number of the adapters 50 is not limited to two, and the design of the adapter can be changed according to the number of the reed valve covers 22, so that each reed valve cover 22 can be connected with the air stop valve 51. Furthermore, the secondary air system 5 utilizes the second air pipe 53 to connect the air stop valve 51 and the air filter 6, so that the air filter 6 and the secondary air system 5 can be connected in series to achieve better air purification performance.
In addition, as shown in fig. 1, another great feature of the present invention is that: the secondary air system 5 is provided on either of the left and right sides of the engine unit 1 when viewed from above the engine unit 1, and the secondary air system 5 is located within the range of the outermost edge of at least one crankcase cover 31. That is, the utility model discloses properly use the space of engine unit 1 both sides to set up secondary air system 5, as long as secondary air system 5's air block valve 51, first air pipe 52 and second air pipe 53 do not exceed the outermost edge of both sides crankcase lid 31, can avoid appearing excessive lengthy or scattered pipe-line distribution, effectively promote the space utilization of whole car, use the whole size that reduces the engine.
Through the above design, the utility model discloses the engine unit of utensil secondary air system effectively utilizes the space of 1 both sides of engine unit to set up secondary air system 5, and the purification efficiency of vehicle exhaust system can be maintained to the one side, and the engine overall structure size is dwindled to the one side, realizes miniaturized creation purpose, is applicable in more polymorphic type car money to gain better control performance and more comfortable ergonomic.
The above-described embodiments are merely exemplary for convenience of description, and the scope of the claims of the present invention should not be limited to the above-described embodiments.
Claims (4)
1. An engine unit having a secondary air system, comprising:
a crankcase, which is provided with a crankshaft rotating along the center of the crankshaft and is covered with at least one crankcase cover;
a cylinder connected with the crankcase;
the cylinder head is connected with the cylinder and comprises at least one combustion chamber, the cylinder head cover is provided with a cylinder head cover, and the cylinder head cover is provided with at least one reed valve cover which contains at least one reed valve; and
the secondary air system comprises an air cut-off valve, a first air pipe and a second air pipe, wherein the air cut-off valve is fixedly arranged on one of the crankcase, the crankcase cover, the cylinder and the cylinder head and used for cutting off negative pressure of air inlet;
when the engine unit is viewed from above, the secondary air system is arranged on any one of the left side and the right side of the engine unit, and the secondary air system is located in the range of the outermost edge of the at least one crankcase cover.
2. An engine unit with secondary air system as claimed in claim 1 wherein when said at least one reed valve cap is a multi-reed valve cap, said first air pipe is connected to each of said reed valve caps in multiple portions by said air shut-off valve with a swivel joint.
3. An engine unit with a secondary air system as set forth in claim 1, wherein the secondary air system is located forward of the center of the crankshaft when viewed from the left or right side of the engine unit.
4. An engine unit with a secondary air system as set forth in claim 1, wherein the secondary air system is located behind the air cleaner as viewed from the left or right side of the engine unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921803988.XU CN210889149U (en) | 2019-10-25 | 2019-10-25 | Engine unit with secondary air system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921803988.XU CN210889149U (en) | 2019-10-25 | 2019-10-25 | Engine unit with secondary air system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210889149U true CN210889149U (en) | 2020-06-30 |
Family
ID=71320591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921803988.XU Active CN210889149U (en) | 2019-10-25 | 2019-10-25 | Engine unit with secondary air system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210889149U (en) |
-
2019
- 2019-10-25 CN CN201921803988.XU patent/CN210889149U/en active Active
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