EP4596875A1

EP4596875A1 - Mounting structure for two-cylinder electric air compressor of vehicle, and two-cylinder electric air compressor

Info

Publication number: EP4596875A1
Application number: EP24219202.9A
Authority: EP
Inventors: Ranjithkumar KESAVAN; Sahul Hameed Thameesdeen; Sureshkumar SUBBAIYAN; Mahendran DIVAKARAN; Ganesamoorthy Arumugam
Original assignee: ZF CV Systems Global GmbH
Current assignee: ZF CV Systems Global GmbH
Priority date: 2024-01-31
Filing date: 2024-12-11
Publication date: 2025-08-06

Abstract

A mounting structure (9) for a two-cylinder electric air compressor (100) of a vehicle is disclosed. The mounting structure (9) includes a first mount plate with rail (91) extending longitudinally and fixedly connected to one side of a cylinder block (1) of the two-cylinder electric air compressor (100). The mounting structure (9) further includes a pair of first mounts (93) movably positioned in the first mount plate with rail (91). The pair of first mounts (93) are configured to be slidable along the first mount plate with rail (91). The mounting structure (9) further includes a second mount (94) connected to the cylinder block (1) on other side of the cylinder block (1) opposite to the side of mounting of the pair of first mounts (93).

Description

TECHNICAL FIELD

The present disclosure generally belongs to the technical field of electric air compressors, and in particular to a mounting structure for a two-cylinder electric air compressor of a vehicle and a two-cylinder electric air compressor.

BACKGROUND

Factors including environmental concerns, technological advancements, and economic considerations, have led to rapid adoption of electric vehicles (EVs). Pure electric vehicles adopt electric air compressors. Compressed air is key to safe and reliable operation of critical applications such as brake applications in vehicles including electric vehicles. In a traditional internal combustion (IC) engine vehicle, air compressors would be driven by diesel engine or gasoline engine, however in EVs, the air compressors would be driven by an electric motor.
Reciprocating (or piston) compressors compress air by using cylinders, pistons, and crank shafts. These elements are powered by an electric motor in the EVs. The air is moved into the cylinder and then compressed by the pistons. The compression can have one or more stages until the right operational pressure is reached. When the air is compressed, it moves through the cooler into the air tank.
Use of a four-cylinder electric air compressor is known in EVs, particularly in a commercial electric vehicle such as buses wherein the air to be compressed is inlet into all the four-cylinders and then the compressed air is outlet for further applications in the commercial vehicle. However, the size and weight of the four-cylinder electric air compressor may be large and the free air delivery or the output compressed air may be more than necessary for some applications such as trucks where a lesser free air delivery with lesser capacity such as a two-cylinder electric compressor may be used.
However, the two-cylinder electric air compressor, particularly with fixed positions of rubber mounts would not meet the desired Noise, Vibration and Harshness (NVH) level.
Therefore, the prior art is to be further improved and enhanced.

SUMMARY

To solve the shortcomings of the prior art described above, the present disclosure provides a mounting structure for a two-cylinder electric air compressor of a vehicle and a two-cylinder electric air compressor. In the present disclosure, the mounting structure is provided with flexible mounting positions of rubber mounts to meet required Noise, Vibration and Harshness (NVH) performance with respect to variable speed and pressure.
The present disclosure provides a mounting structure for a two-cylinder electric air compressor of a vehicle. The mounting structure includes a first mount plate with rail extending longitudinally and fixedly connected to one side of a cylinder block of the two-cylinder electric air compressor. The mounting structure further includes a pair of first mounts movably positioned in the first mount plate with rail. The pair of first mounts are configured to be slidable along the first mount plate with rail. The mounting structure further includes a second mount connected to the cylinder block on other side of the cylinder block opposite to the one side of mounting of the pair of first mounts.
Further, the mounting structure for a two-cylinder electric air compressor includes a second mount plate with rail extending longitudinally and fixedly connected to other side of the cylinder block opposite to the one side. The second mount is connected to the second mount plate with rail.
Further, the second mount is positioned at a substantially central portion of the second mount plate with rail in a longitudinal direction of the two-cylinder electric air compressor.
Further, the pair of first mounts and the second mount are rubber mounts.
Further, position of the pair of first mounts is adjustable based on operational parameters of the two-cylinder electric air compressor.
Further, the operational parameters include rotational speed of a crankshaft of the two-cylinder electric air compressor.
The present disclosure further provides a two-cylinder electric air compressor of a vehicle. The two-cylinder electric air compressor includes a cylinder block defined with a first cylinder head and a second cylinder head at top end of the cylinder block. The first cylinder head and the second cylinder head are arranged in a V-shape. The two-cylinder electric air compressor further includes a crankshaft, a first connecting rod, a second connecting rod, a first piston and a second piston are all disposed in the cylinder block. One end of the first connecting rod is sleeved on the crankshaft, the other end of the first connecting rod is connected with the first piston. One end of the second connecting rod is sleeved on the crankshaft, and the other end of the second connecting rod is connected with the second piston. The two-cylinder electric air compressor further includes a motor disposed adjacent to the cylinder block and comprising an output shaft coupled to the crankshaft. The crankshaft is driven by the output shaft of the motor to rotate, and the crankshaft rotates to drive the first and second connecting rods to perform cycloidal motion and further drive the first and second pistons to perform reciprocating linear motion so as to realize air suction and discharge of the first cylinder head and the second cylinder head. The two-cylinder electric air compressor further includes a mounting structure. The mounting structure includes a first mount plate with rail extending longitudinally and fixedly connected to one side of a cylinder block of the two-cylinder electric air compressor. The mounting structure further includes a pair of first mounts movably positioned in the first mount plate with rail. The pair of first mounts are configured to be slidable along the first mount plate with rail. The mounting structure further includes a second mount connected to the cylinder block on other side of the cylinder block opposite to the one side of mounting of the pair of first mounts.
Further an air outlet is disposed on each of the first cylinder head and the second cylinder head. The two-cylinder electric air compressor further comprises at least one air discharge pipe. One end of the at least one air discharge pipe is in communication with the air outlet of the first cylinder head and the second cylinder head, and other end of the at least one air discharge pipe is connectable to an air channel of a vehicle.
Further, the two-cylinder electric air compressor includes at least two electric fans for reducing temperatures of the first cylinder head and the second cylinder head. The at least two electric fans are located at top of the first cylinder head and the second cylinder head.

Beneficial Effects of The Invention

By adopting the above technical solutions, the present disclosure achieves the following beneficial effects.

1. In the mounting structure for a two-cylinder electric air compressor of the present disclosure, the first mount plate with rail allows the position of pair of first mounts to be adjustable as per operational parameters such as rotational speed of the two-cylinder electric air compressor to optimize and improve the Noise Vibration and Harshness (NVH) performance of the two-cylinder electric air compressor.
2. In the mounting structure for a two-cylinder electric air compressor of the present disclosure, the second mount plate with rail allows the position of second mount to be adjustable as per operational parameters such as rotational speed of the two-cylinder electric air compressor to optimize and improve the NVH performance of the two-cylinder electric air compressor.
3. The two-cylinder electric air compressor of the present disclosure is derivable from existing four-cylinder electric air compressor platform by closing one of the two sides of the four-cylinder electric air compressor, thus eliminating the need for a separate platform for the two-cylinder electric air compressor.
4. In the present disclosure, two cylinder heads on the cylinder block are arranged in a V-shape to optimize an overall arrangement of the two-cylinder electric air compressor. The entire two-cylinder electric air compressor is designed in a split type, simplifying assembly procedures and improving an assembly efficiency.
5. The cylinder block of the present disclosure is made of an aluminum material, the weight is greatly reduced, the size of the cylinder bore is decreased, and the overall dimension becomes small, thereby saving the installation space.
6. In the present disclosure, the motor is a permanent magnet synchronous motor, greatly reducing the noise during the operation.
7. In the present disclosure, the electric fan is adopted to lower the temperature of each cylinder head, so that the two-cylinder electric air compressor in the present disclosure has an independent cooling capability.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is an overall assembly view of a two-cylinder electric air compressor according to an embodiment of the present disclosure.
Fig. 2 is another overall assembly view from a different perspective of a two-cylinder electric air compressor of Fig. 1.
Fig. 3 is a half-sectional view of a cylinder block in a two-cylinder electric air compressor according to an embodiment of the present disclosure.
Fig. 4 is an exploded view of a cylinder head in a two-cylinder electric air compressor according to an embodiment of the present disclosure.
Fig. 5 is a perspective view of an inlet air tank according to an embodiment of the present disclosure.
Fig. 6 is a perspective view of a rail of a mounting structure according to an embodiment of the present disclosure.
Fig. 7a and Fig. 7b is a schematic representation of different mounting positions of pair of first mounts and second mount according to an embodiment of the present disclosure.

Numerals of the drawings are described as follows:
1. cylinder block, 2. motor, 3. inlet air tank, 31. inlet air tank body, 32. air distributing tank body, 33. air discharge branch, 34. assembly lug, 36. air inlet, 4. electric fan, 5. first cylinder head, 6. second cylinder head, 61. cylinder cover, 62. sealing gasket, 63. discharge valve plate, 64. inlet valve, 65. cylinder liner, 7. inlet port, 8. air discharge pipe, 81. outlet of air discharge pipe, 82. air outlet of first cylinder head and second cylinder head, 9. mounting structure, 91. first mount plate with rail, 92. second mount plate with rail, 93. pair of first mounts, 94. second mount, 10. crankshaft, 11. first connecting rod, 12. first piston, 13. second connecting rod, 14. second piston, 100. two-cylinder electric air compressor.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present disclosure is further described in detail below in combination with accompanying and specific embodiments, but the present disclosure is not limited to these embodiments.
Fig. 1 and Fig. 2 illustrate perspective views of a two-cylinder electric air compressor 100. As shown in Fig. 1 and Fig. 2, the two-cylinder electric air compressor 100 includes a cylinder block 1, a motor 2, and the motor 2 is disposed adjacent and supported by the cylinder block 1. The cylinder block is made of an aluminum material, reducing an overall weight thereof.
A first cylinder head 5 and a second cylinder head 6 are disposed at top ends of the cylinder block 1 respectively, and the first cylinder head 5 and the second cylinder head 6 are arranged in a V-shape.
As shown in Fig. 4, each of the first cylinder head 5 and the second cylinder head 6 includes a cylinder cover 61, a sealing gasket 62, a discharge valve plate 63, an inlet valve 64 and a cylinder liner 65 which are sequentially disposed from top to bottom, and the cylinder liners 65 of the cylinder heads 5 and 6 are connected with the cylinder block 1. Referring back to Fig. 1, an inlet port 7 is provided, the inlet port 7 is extending from the inlet air tank 3 to each of the first cylinder head 5 and a second cylinder head 6.
As shown in Fig. 3, a crankshaft 10, a first connecting rod 11, a second connecting rod 13, a first piston 12 and a second piston 14 are all disposed within the cylinder block 1. One end of the first connecting rod 11 is sleeved on the crankshaft 10, the other end of the first connecting rod 11 is connected with the first piston 12, one end of the second connecting rod 13 is sleeved on the crankshaft 10, and the other end of the second connecting rod 13 is connected with the second piston 14.
In this embodiment, the motor 2 is a permanent magnet synchronous motor and the crankshaft 10 within the cylinder block 1 is driven by an output shaft (not shown explicitly) of the motor 2 to rotate.
The crankshaft 10 rotates to drive the first and second connecting rods 11 and 13 to perform cycloidal motion and further drive the first and second pistons 12 and 14 to perform reciprocating linear motion so as to realize air suction and discharge of the first cylinder head 5 and the second cylinder head 6. Specifically, when the first piston 12 and the second piston 12 move down, the inlet valve 64 is opened, the discharge valve plate 63 is closed, and the air compressor performs an air suction process; when the first piston 13 and the second piston 15 move up, the inlet valve 64 is closed, the discharge valve plate 63 is opened, and the two-cylinder electric air compressor 100 performs an air compression process to compress the air sucked in the above suction process and then discharge the air to an air channel of a vehicle.
As shown in Fig. 5, the two-cylinder electric air compressor of this embodiment further includes an inlet air tank 3. The inlet air tank 3 includes an inlet air tank body 31 and two air distributing tank bodies 32, and the two air distributing tank bodies 32 are symmetrically disposed at front and rear ends of the inlet air tank body 31. The inlet air tank body 31 is in communication with the two air distributing tank bodies 32, and the inlet air tank 3 is presented in an integral shape in which the inlet air tank body 31 narrows toward the air distributing tank bodies 32. Connection portions of the inlet air tank body 31 and the two air distributing tank bodies 32 are transitioned in an arc shape, so that an air flow entering the inlet air tank body 31 can be smoothly transported to each air distributing tank body 32, thereby reducing the noise. An air inlet 36 is disposed on one side of the inlet air tank body 31. Air discharge branches 33 are connected to the respective air distributing tank body 32 respectively, and two air discharge branches 33 are symmetrically arranged.
In the two-cylinder electric air compressor 100 of this embodiment, the air inlet 36 of the inlet air tank 3 is connected to an air filter. Air filtered by the air filter firstly enters the inlet air tank body 31 via the air inlet 36, the incoming air is buffered in the inlet air tank body 31, and then uniformly distributed to the inlet ports 7 extending towards the first cylinder head 5 and the second cylinder head 6 of the electric air compressor 100 through the two symmetrical air discharge branches 33 of the air distributing tank bodies 32 on both sides of the inlet air tank body 31. The two symmetrical air discharge branches 33 are in direct communication with the two cylinder heads 5 and 6 of the electric air compressor 100 and can distribute the air uniformly and efficiently so as to realize the air suction process of the electric air compressor 100. The inlet air tank 3 can uniformly distribute the incoming air to the two cylinder heads 5 and 6 of the two-cylinder electric air compressor 100, thereby decreasing a negative pressure of the incoming air and facilitating reducing oil carryover. Further, this designing manner decreases suction frequency and reduces the suction noise.
During the reciprocating motion of the first piston 12 and the second piston 14 of the electric air compressor 100, an air volume within the first cylinder head 5 and the second cylinder head 6 will be changed, and an air volume within the inlet air tank 3 is further changed, thereby generating pressure fluctuation. The two-cylinder electric air compressor 100 of this embodiment not only realizes functions that a traditional electric air compressor has, but also effectively buffers the air through an overall symmetrical structure, thereby reducing the noise of the electric air compressor 100 and efficiently and uniformly distributing the air entering the cylinder heads 5 and 6 of the electric air compressor 100.
In this embodiment, the inlet air tank 3, the inlet air tank body 31, the air distributing tank bodies 32 and the air discharge branches 33 are integrally formed by high-strength plastic. The inlet air tank 3 of this embodiment facilitates moulding production. In this case, the product weight is reduced with the overall strength being guaranteed, which satisfies requirements of vehicle-mounted systems for safety, light weight and compactness of components. The integral design of the inlet air tank 3 and the two air discharge branches 33 simplifies the inlet pipe, reduces the installation space, and achieves the easier installation and the simpler external appearance. Two assembly lugs 34 at opposite sides are disposed at a lower surface of the inlet air tank body 31, and a bolt hole is opened on the each of the two assembly lugs 34. The inlet air tank 3 is assembled onto an outer housing of the motor 2 through the bolts and the assembly lugs 34.
As shown in Fig. 1 and Fig. 2, an air outlet 82 is further disposed on each of the cylinder heads 5 and 6 respectively. The two-cylinder electric air compressor 100 further includes an air discharge pipe 8, one end of the air discharge pipe 8 is in communication with the air outlet 82 of the first cylinder head 5 and the second cylinder head 6, and the other end of the air discharge pipe 8 is connected to the air channel of the vehicle. Further, the air discharge pipe 8 is defined with an outlet 81 as shown in Fig. 2 to deliver the compressed air to the vehicle. The air discharge pipe 8 is made of a metallic material such as copper, and sealing between the air discharge pipe 8 and the air outlet 82 of the cylinder head 6 is achieved by gluing or by sealing washers. The sealing of the joints of the motor is also achieved by gluing or by sealing rings.
By using the above two-cylinder electric air compressor 100, the air flows through the air filter of the vehicle and then enters the inlet air tank 3, the inlet air tank 3 distributes the air to the first cylinder head 5 and the second cylinder head 6 of the air compressor 100, and then, the pistons 12 and 14 within the cylinder heads 5 and 6 perform reciprocating motion under the actions of the motor 2, the crankshaft 10 and the connecting rods 11 and 13 respectively. In the operation process, when the piston 12 or 14 moves down, the cylinder head 5 or 6 sucks the air; when the piston 12 or 14 moves up, the air compressor 100 performs a compression process to compress the air sucked in the suction process and then discharge the air to the air channel of the vehicle, and the air is finally stored in an air storage tank of the vehicle for later use.
The two-cylinder electric air compressor 100 further includes at least two electric fans 4 for reducing temperatures of the cylinder heads 5 and 6, where one electric fan 4 is located at top of the first cylinder head 5 the other electric fan 4 is located at top of the second cylinder head 6. The arrangement of the electric fans 4 enables the electric air compressor 100 to have an independent cooling capability.
Referring back to Fig. 1 and Fig. 2, in this embodiment, the two-cylinder electric air compressor 100 further includes a mounting structure 9 for mounting and supporting the two-cylinder electric air compressor 100. The mounting structure 9 includes a first mount plate with rail 91 on one side of the cylinder block 1. In an embodiment, the first mount plate with rail 91 may be simply referred to as first mount plate 91 and the same should not be construed as a limitation of the present disclosure. The first mount plate 91 extends longitudinally in a direction X-X shown in Fig. 1, and is fixedly connected to the one side of the cylinder block 1.
As shown in Fig. 6, the first mount plate 91 is defined with a rail. Further, the first mount plate 91 is defined with holes at its ends to connect the first mount plate with rail 91 with the cylinder block 1. The first mount plate 91 is fastened to the cylinder block 1 through a fastening connection such as nut and bolt connection. The mounting structure 9 includes a pair of first mounts 93 (shown in Fig. 1) positioned in the first mount plate with rail 91. The pair of first mounts 93 are configured to support, dampen noise and vibrations of the two-cylinder electric air compressor 100. The pair of first mounts 93 are configured to be slidable along the rail of the first mount plate 91. The pair of first mounts 93 are rubber mounts and are positioned in the first mount plate with rail 91 such that they are slidable within along the rail and is fixed upon moving the pair of first mounts 93 to the desired position. The pair of first mounts 93 are used to dampen vibrations and reduce the transmission of noise and shock from the two-cylinder electric air compressor 100. The pair of first mounts 93 typically involves a metal component (such as a bracket or housing) and a rubber element. The rubber is often molded into a specific shape to provide flexibility and resilience. The pair of first mounts 93 absorb and dissipate vibrations and shocks by allowing the rubber to flex and deform, effectively isolating the two-cylinder electric air compressor 100. Thus, the first mount plate 91 provides for a slidable linear movement of the pair of first mounts 93 to adjust the position as per operational parameters of the two-cylinder electric air compressor 100. In this embodiment, the operational parameters influencing the position of the pair of first mounts 93 in the first mount plate with rail 91 includes rotational speed of the crankshaft 10 of the two-cylinder electric air compressor 100.
In one embodiment, the mounting structure 9 further includes a second mount 94 as shown in Fig. 2, that is connected to the cylinder block on other side opposite to the side of mounting of the pair of first mounts 93. The second mount 94 is a rubber mount and in one embodiment is directly connected to the cylinder block 1 at a desired position. In another embodiment, the mounting structure 9 includes a second mount plate with rail 92 as shown in Fig. 2, extending longitudinally and fixedly connected on the other side of the cylinder block 1 opposite to the side of the first mount plate with rail 91. In an embodiment, the second mount plate with rail 92 may be simply referred to as second mount plate 92 and the same should not be construed as a limitation of the present disclosure. In this embodiment, the second mount 94 is connected to the second mount plate 92. The second mount plate 92 has a similar structure to that of the first mount plate 91. In this embodiment, the second mount 94 is positioned in the second mount plate with rail 92, such that the second mount 94 is slidable and the position of the second mount 94 is adjustable as per the operational parameters such as rotational speed of the two-cylinder electric air compressor 100. The second mount 94 is positioned at a substantially central position along the longitudinal direction on the other side of the cylinder block 1 along the second mount plate with rail 92.
Referring now to Fig. 7a and Fig. 7b, they illustrate different mounting positions of the pair of first mounts 93 and the second mount 94 as per the operational parameters of the two-cylinder electric air compressor 100. As the pair of first mounts 93 are slidable along the first mount plate with rail 91, the position is adjustable as per the operational parameters such as rotational speed of the two-cylinder electric air compressor 100.
As shown in Fig. 7a, the distance x is the distance between the pair of first mounts 93 when the rotational speed of the crankshaft 10 the two-cylinder electric air compressor 100 is x'. The position of the pair of first mounts 93 or the distance x is selected such that the NVH level of the electric air compressor 100 is optimal. However, if the rotational speed of the crankshaft 10 of the electric air compressor 100 is reduced to y' such that y'<x' then the distance x between the pair of first mounts 93 would lead to high NVH levels and therefore the position of the pair of first mounts 93 is adjustable by sliding along the first mount plate with rail 91. The distance between the pair of first mounts 93 is reduced to y such that y<x to optimize the NVH level of the two-cylinder electric air compressor 100. Similarly, the position of the second mount 94 is also adjusted such that optimal NVH level of the electric air compressor is obtained.
Parts unmentioned in the present disclosure may be realized by adopting or referring to the prior art.
Specific embodiments described herein are merely exemplary of the spirit of the present disclosure. Persons skilled in the art may make various modifications or supplementations or substitutions in a similar manner to the described specific embodiments without departing from the spirit of the present disclosure or surpassing the scope defined by the appended claims.

Claims

A mounting structure for a two-cylinder electric air compressor of a vehicle, the mounting structure comprising:
a first mount plate with rail, extending longitudinally and fixedly connected to one side of a cylinder block of the two-cylinder electric air compressor;

a pair of first mounts movably positioned in the first mount plate with rail, the pair of first mounts are configured to be slidable along the first mount plate with rail; and

a second mount connected to the cylinder block on other side of the cylinder block opposite to the one side of mounting of the pair of first mounts.
The mounting structure according to claim 1 comprises a second mount plate with rail, extending longitudinally and fixedly connected to other side of the cylinder block opposite to the one side, wherein the second mount is connected to the second mount plate with rail.
The mounting structure according to claim 2, wherein the second mount is positioned at a substantially central portion of the second mount plate with rail in a longitudinal direction of the two-cylinder electric air compressor.
The mounting structure according to claim 1, wherein the pair of first mounts and the second mount are rubber mounts.
The mounting structure according to claim 1, wherein position of the pair of first mounts is adjustable based on operational parameters of the two-cylinder electric air compressor.
The mounting structure according to claim 5, wherein the operational parameters include rotational speed of a crankshaft of the two-cylinder electric air compressor.
A two-cylinder electric air compressor of a vehicle, comprising:
a cylinder block defined with a first cylinder head and a second cylinder head at top end of the cylinder block, the first cylinder head and the second cylinder head are arranged in a V-shape;

a crankshaft, a first connecting rod, a second connecting rod, a first piston and a second piston are all disposed in the cylinder block, one end of the first connecting rod is sleeved on the crankshaft, the other end of the first connecting rod is connected with the first piston, one end of the second connecting rod is sleeved on the crankshaft, and the other end of the second connecting rod is connected with the second piston;

a motor disposed adjacent to the cylinder block and comprising an output shaft coupled to the crankshaft, the crankshaft is driven by the output shaft of the motor to rotate, and the crankshaft rotates to drive the first and second connecting rods to perform cycloidal motion and further drive the first and second pistons to perform reciprocating linear motion so as to realize air suction and discharge of the first cylinder head and the second cylinder head; and

a mounting structure comprising:
a first mount plate with rail, extending longitudinally and fixedly connected to one side of a cylinder block of the two-cylinder electric air compressor;

a pair of first mounts movably positioned in the first mount plate with rail, the pair of first mounts are configured to be slidable along the first mount plate with rail; and

a second mount connected to the cylinder block on other side of the cylinder block opposite to the side one side of mounting of the pair of first mounts.
The two-cylinder electric air compressor according to claim 7, wherein an air outlet is further disposed on each of the first cylinder head and the second cylinder head, the two-cylinder electric air compressor further comprises at least one air discharge pipe, one end of the at least one air discharge pipe is in communication with the air outlet of the first cylinder head and the second cylinder head, and other end of the at least one air discharge pipe is connectable to an air channel of a vehicle.
The two-cylinder electric air compressor according to claim 7, further comprising at least two electric fans for reducing temperatures of the first cylinder head and the second cylinder head, wherein the at least two electric fans is located at top of the first cylinder head and the second cylinder head.
The two-cylinder electric air compressor according to claim 7, wherein the mounting structure comprises a second mount plate with rail, extending longitudinally and fixedly connected to other side of the cylinder block opposite to the side of mounting of the pair of first mounts, wherein the second mount is connected to the second mount plate with rail.
The two-cylinder electric air compressor according to claim 10, wherein the second mount is positioned at a substantially central portion of the second mount plate with rail in a longitudinal direction of the two-cylinder electric air compressor.
The two-cylinder electric air compressor according to claim 7, wherein the pair of first mounts and the second mount are rubber mounts.
The two-cylinder electric air compressor according to claim 7, wherein position of the pair of first mounts is adjustable based on operational parameters of the two-cylinder electric air compressor.
The two-cylinder electric air compressor according to claim 13, wherein the operational parameters include rotational speed of a crankshaft of the two-cylinder electric air compressor.