Commercial vehicle air supply device and method

Abstract

The present invention discloses a commercial vehicle air supply device and method, which relates to the technical field of automobile air supply. The air supply device includes: an air compressor, a first electric control valve, a pressure drop sensor, an air cylinder, a second electric control valve, a third electric control valve and a controller; the first electric control valve is connected to the air compressor and is also connected to an auxiliary air device; the pressure drop sensor is arranged between the first electric control valve and the auxiliary air device; the air cylinder is connected to the air compressor and is also connected to the auxiliary air device; the second electric control valve is arranged between the air cylinder and the auxiliary air device; the third electric control valve is arranged between the air cylinder and the air compressor; the controller is electrically connected to the air compressor, the first electric control valve, the pressure drop sensor, the second electric control valve and the third electric control valve. The present invention only sets one air cylinder to meet the air demand of the auxiliary air device in different working conditions, the structural arrangement is more convenient, and the cost of one air cylinder is also reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile air supply, and in particular to an air supply device and method for a commercial vehicle. Background Art

[0002] At present, the air supply device of commercial vehicles mainly supplies air to auxiliary air equipment and parking air equipment. When the commercial vehicle starts or drives, both the auxiliary air equipment and the parking air equipment need air supply. Moreover, in particular, when the commercial vehicle drives on good road conditions, the auxiliary air equipment requires less air; when driving on bad road conditions, the auxiliary air equipment requires more air.

[0003] In the prior art, in order to meet the gas demand of the auxiliary gas equipment, two gas cylinders are usually provided, and the two gas cylinders supply gas to the auxiliary gas equipment and the parking gas equipment separately.

[0004] However, in the prior art, two air storage cylinders are provided, which increases the cost. Moreover, the two air storage cylinders require a higher structural space and are inconvenient to arrange. Summary of the invention

[0005] The embodiments of the present invention provide an air supply device and method for a commercial vehicle to solve the technical problem in the related art that two air storage cylinders are used to supply air to auxiliary air equipment and parking air equipment separately, resulting in increased costs and inconvenient layout.

[0006] In a first aspect, a commercial vehicle air supply device is provided, comprising:

[0007] Air compressor;

[0008] A first electrically controlled valve, which is connected to the air compressor and is also used to connect to auxiliary air equipment;

[0009] A pressure drop sensor, which is arranged between the first electric control valve and the auxiliary gas equipment;

[0010] An air storage cylinder, which is connected to the air compressor and is also used to connect to auxiliary air equipment;

[0011] A second electrically controlled valve, which is disposed between the gas storage cylinder and the auxiliary gas equipment;

[0012] A third electrically controlled valve, which is disposed between the air storage cylinder and the air compressor;

[0013] A controller is electrically connected to the air compressor, the first electrically controlled valve, the pressure drop sensor, the second electrically controlled valve and the third electrically controlled valve.

[0014] In some embodiments, the commercial vehicle air supply device further comprises:

[0015] The inlet of the four-circuit protection valve is connected to the air compressor, and the two outlets of the four-circuit protection valve are respectively connected to the first electric-controlled valve and the third electric-controlled valve.

[0016] In some embodiments, the commercial vehicle air supply device further comprises:

[0017] A dryer is arranged between the air compressor and the four-circuit protection valve.

[0018] In some embodiments, the commercial vehicle air supply device further comprises:

[0019] A pressure relief valve is provided on the dryer.

[0020] In some embodiments, the gas cylinder is also used to connect to parking gas equipment.

[0021] In a second aspect, a commercial vehicle air supply method is provided, comprising the following steps:

[0022] When the commercial vehicle is started or driving, the controller controls the air compressor, the first electronically controlled valve and the third electronically controlled valve to open, so that the air compressor supplies air to the auxiliary air equipment and the air tank; and when the pressure drop value of the pressure drop sensor obtained by the controller is greater than the preset pressure value, the controller also controls the second electronically controlled valve to open, so that the air tank supplies air to the auxiliary air equipment.

[0023] In some embodiments, a four-circuit protection valve is connected to the outlet of the air compressor, and two outlets of the four-circuit protection valve are connected to the first electric-controlled valve and the third electric-controlled valve respectively.

[0024] In some embodiments, a dryer is provided between the air compressor and the four-circuit protection valve.

[0025] In some embodiments, a pressure relief valve is provided in the dryer.

[0026] In some embodiments, when the commercial vehicle is started or driving, the controller also obtains the load rate of the air compressor. If the load rate is greater than a preset load rate, the controller controls the second electronically controlled valve to open, so that the air tank supplies air to the auxiliary air equipment.

[0027] The beneficial effects brought about by the technical solution provided by the present invention include:

[0028] The embodiment of the present invention provides a gas supply device and method for a commercial vehicle, which only has one gas cylinder. When the commercial vehicle is started or driving, a pressure drop sensor is used to determine whether the gas cylinder supplies gas to auxiliary gas equipment to meet the gas demand of the auxiliary gas equipment under different working conditions. The present invention reduces one gas cylinder in terms of space, makes the structural arrangement more convenient, and also reduces the cost of one gas cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A system diagram of a commercial vehicle air supply device provided by an embodiment of the present invention;

[0031] In the figure: 1. air compressor; 2. first electric control valve; 3. pressure drop sensor; 4. air storage cylinder; 5. second electric control valve; 6. third electric control valve; 7. controller; 8. four-circuit protection valve; 9. dryer; 10. pressure relief valve; 11. auxiliary air equipment; 12. parking air equipment. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The embodiment of the present invention provides an air supply device for a commercial vehicle, which can solve the technical problem that two air storage cylinders are used to supply air to auxiliary air equipment and parking air equipment separately, resulting in increased costs and inconvenient structural layout.

[0034] See also Figure 1 As shown, a commercial vehicle air supply device includes: an air compressor 1, a first electric control valve 2, a pressure drop sensor 3, an air storage cylinder 4, a second electric control valve 5, a third electric control valve 6 and a controller 7.

[0035] The first electrically controlled valve 2 is connected to the air compressor 1 and is also connected to the auxiliary gas equipment 11. The pressure drop sensor 3 is arranged between the first electrically controlled valve 2 and the auxiliary gas equipment 11. The air storage cylinder 4 is connected to the air compressor 1 and is also connected to the auxiliary gas equipment 11.

[0036] The second electrically controlled valve 5 is disposed between the air reservoir 4 and the auxiliary air equipment 11. The third electrically controlled valve 6 is disposed between the air reservoir 4 and the air compressor 1. The controller 7 is electrically connected to the air compressor 1, the first electrically controlled valve 2, the pressure drop sensor 3, the second electrically controlled valve 5 and the third electrically controlled valve 6.

[0037] The working principle of the commercial vehicle air supply device in the embodiment of the present invention is as follows:

[0038] When the commercial vehicle starts or travels, the controller 7 controls the air compressor 1, the first electrically controlled valve 2 and the third electrically controlled valve 6 to open, so that the air compressor 1 supplies air to the auxiliary air equipment 11 and the air storage cylinder 4. When the pressure drop value of the pressure drop sensor 3 obtained by the controller 7 is greater than the preset pressure value, the controller 7 also controls the second electrically controlled valve 5 to open, so that the air storage cylinder 4 supplies air to the auxiliary air equipment 11. In other words, when the pressure drop value of the pressure drop sensor 3 is small, it means that the air consumption of the vehicle's auxiliary air equipment 11 is small, and only the air compressor 1 is used to supply air to the auxiliary air equipment 11; when the pressure drop value of the pressure drop sensor 3 is large, it means that the air consumption of the vehicle's auxiliary air equipment 11 is large, and the air compressor 1 and the air storage cylinder 4 supply air to the auxiliary air equipment 11 together.

[0039] Compared with the prior art, the commercial vehicle air supply device in the embodiment of the present invention is provided with only one air reservoir 4. When the commercial vehicle is started or traveling, the pressure drop sensor 3 is used to determine whether the air reservoir 4 supplies air to the auxiliary air device 11, so as to meet the air demand of the auxiliary air device 11 under different working conditions. The present invention reduces one air reservoir in terms of space, makes the structural arrangement more convenient, and also reduces the cost of one air reservoir.

[0040] As an optional implementation, the commercial vehicle air supply device in the embodiment of the present invention also includes a four-circuit protection valve 8, the inlet of the four-circuit protection valve 8 is connected to the air compressor 1, and the two outlets of the four-circuit protection valve 8 are respectively connected to the first electric-controlled valve 2 and the third electric-controlled valve 6. When any circuit fails, it will not affect the normal operation of other circuits.

[0041] As an optional implementation, the commercial vehicle air supply device in the embodiment of the present invention further includes a dryer 9, which is arranged between the air compressor 1 and the four-circuit protection valve 8 to dry the gas and protect subsequent equipment.

[0042] As an optional implementation, the commercial vehicle air supply device in the embodiment of the present invention further includes a pressure relief valve 10, which is arranged in the dryer 9. When the pressure in the air circuit is too high, the pressure relief valve 10 releases the pressure in time to protect subsequent components of the air circuit.

[0043] As an optional embodiment, the gas cylinder 4 is also used to connect to the parking gas equipment 12, that is, under normal circumstances, the gas cylinder 4 supplies gas to the parking gas equipment 12, and only when the auxiliary gas equipment 11 consumes a large amount of gas, will it supply gas to the auxiliary gas equipment 11.

[0044] See also Figure 1 As shown, an embodiment of the present invention also provides a commercial vehicle air supply method, comprising the following steps:

[0045] When the commercial vehicle starts or drives, the controller 7 controls the air compressor 1, the first electrically controlled valve 2 and the third electrically controlled valve 6 to open, so that the air compressor 1 supplies air to the auxiliary air equipment 11 and the air cylinder 4; and when the pressure drop value of the pressure drop sensor 3 obtained by the controller 7 is greater than the preset pressure value, the controller 7 also controls the second electrically controlled valve 5 to open, so that the air cylinder 4 supplies air to the auxiliary air equipment 11.

[0046] As an optional implementation, the commercial vehicle air supply method in the embodiment of the present invention connects a four-circuit protection valve 8 to the outlet of the air compressor 1, and the two outlets of the four-circuit protection valve are respectively connected to the first electric control valve 2 and the third electric control valve 6. When any circuit fails, it will not affect the normal operation of other circuits.

[0047] As an optional implementation, in the commercial vehicle air supply method in the embodiment of the present invention, a dryer 9 is provided between the air compressor 1 and the four-circuit protection valve 8 to dry the gas and protect subsequent equipment.

[0048] As an optional implementation, in the commercial vehicle air supply method in the embodiment of the present invention, a pressure relief valve 10 is provided in the dryer 9. When the pressure in the air circuit is too high, the pressure relief valve 10 releases the pressure in time to protect the subsequent components of the air circuit.

[0049] As an optional implementation, in the commercial vehicle air supply method in the embodiment of the present invention, when the commercial vehicle is started or driving, the controller 7 also obtains the load rate of the air compressor 1. If the load rate is greater than the preset load rate, the controller 7 controls the second electric control valve 5 to open, so that the air storage cylinder 4 supplies air to the auxiliary air equipment 11, so as to prevent the load rate from being too high after the air compressor 1 has worked for a long time, resulting in problems such as oil leakage and high temperature, which will affect the service life of the air compressor.

[0050] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0051] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0052] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A commercial vehicle air supply device, characterized in that: include: Air compressor (1); A first electrically controlled valve (2), which is connected to the air compressor (1) and is also used to connect to an auxiliary air equipment (11); A pressure drop sensor (3) disposed between the first electrically controlled valve (2) and the auxiliary gas equipment (11); An air storage cylinder (4), which is connected to the air compressor (1) and is also used to connect to auxiliary air equipment (11) and parking air equipment (12); a second electrically controlled valve (5) disposed between the gas storage cylinder (4) and the auxiliary gas equipment (11); a third electrically controlled valve (6), which is arranged between the air storage cylinder (4) and the air compressor (1); a controller (7) electrically connected to the air compressor (1), the first electrically controlled valve (2), the pressure drop sensor (3), the second electrically controlled valve (5) and the third electrically controlled valve (6); a four-circuit protection valve (8), an inlet of which is connected to the air compressor (1), and two outlets of the four-circuit protection valve (8) are respectively connected to the first electrically controlled valve (2) and the third electrically controlled valve (6); a dryer (9), which is arranged between the air compressor (1) and the four-circuit protection valve (8); a pressure relief valve (10) disposed in the dryer (9); When the commercial vehicle is started or traveling, the controller (7) controls the air compressor (1), the first electrically controlled valve (2), and the third electrically controlled valve (6) to open, so that the air compressor (1) supplies air to the auxiliary air equipment (11) and the air storage cylinder (4); When the pressure drop value of the pressure drop sensor (3) obtained by the controller (7) is greater than a preset pressure value, the controller (7) further controls the second electrically controlled valve (5) to open, so that the gas storage cylinder (4) supplies gas to the auxiliary gas equipment (11); the controller (7) further obtains the load rate of the air compressor (1), and when the load rate of the air compressor (1) is greater than a preset load rate, the controller (7) controls the second electrically controlled valve (5) to open, so that the gas storage cylinder (4) supplies gas to the auxiliary gas equipment (11).

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