Exhaust brake whole vehicle performance test equipment

Abstract

The utility model discloses exhaust brake vehicle performance test equipment, and relates to the field of exhaust equipment. The exhaust brake vehicle performance test equipment comprises an engine, an exhaust unit, an air storage unit and a data processor, the exhaust unit is connected with the engine, the exhaust unit comprises an exhaust brake valve and an air pressure sensor, the exhaust brake valve is used for opening and closing an engine exhaust channel, the air pressure sensor is installed on the exhaust brake valve, and the air storage unit is connected with the data processor. And the air pressure sensor is used for detecting the back pressure of the exhaust channel. According to the exhaust brake whole vehicle performance test equipment, the air pressure sensor is directly installed on the exhaust brake valve, the back pressure of an exhaust channel can be accurately detected in real time, data are transmitted to the data processor to be displayed, and a tester can visually know the working state of an exhaust brake system conveniently. And a plurality of selectable air leakage holes are formed in the disc, so that the air leakage holes with proper hole diameters and quantity can be selected for exhausting according to different test requirements.

Description

TECHNICAL FIELD

[0001] The utility model relates to exhaust equipment technical field, concretely is a kind of exhaust brake whole vehicle performance test equipment. BACKGROUND

[0002] Exhaust brake increases exhaust back pressure by closing engine exhaust passage (such as exhaust butterfly valve or turbocharger bypass valve), so that engine consumes more energy in compression and exhaust stroke, thereby generating braking force. At this time, the engine becomes an "air compressor", which converts vehicle kinetic energy into heat energy.

[0003] As a common auxiliary brake, exhaust brake is required by regulation GB 12676. The traditional exhaust brake valve is constant pressure type, and the spring assembly of the general exhaust brake valve controls exhaust back pressure.

[0004] However, due to layout reasons, light truck models often cannot choose constant pressure exhaust brake valves, exhaust back pressure cannot be adjusted, back pressure data is not monitored, and only experience data is relied on. If back pressure is too large, it can easily cause engine throttle valve solenoid valve damage, and if back pressure is too small, exhaust brake effect is poor. How to accurately confirm exhaust brake back pressure is the current industry difficulty. SUMMARY

[0005] To solve the problem of how to accurately confirm exhaust brake back pressure, the utility model provides an exhaust brake whole vehicle performance test equipment, which solves the problem of how to accurately confirm exhaust brake back pressure.

[0006] To achieve the above purpose, the utility model is implemented by the following technical solutions: an exhaust brake whole vehicle performance test equipment, comprising:

[0007] An engine;

[0008] An exhaust unit connected to the engine, the exhaust unit comprising:

[0009] An exhaust brake valve for opening and closing the engine exhaust passage;

[0010] A gas pressure sensor installed on the exhaust brake valve, and the gas pressure sensor is used to detect exhaust passage back pressure;

[0011] A gas storage unit connected to the exhaust brake valve, and the gas storage unit is used to assist the opening and closing of the exhaust brake valve;

[0012] A data processor connected to the gas pressure sensor signal, used to display exhaust passage back pressure.

[0013] Preferably, the exhaust unit further comprises:

[0014] an exhaust front pipe installed between the engine and the intake end of the exhaust brake valve;

[0015] an exhaust rear pipe installed at the exhaust end of the exhaust brake valve.

[0016] Preferably, the exhaust passage is composed of the internal space of the exhaust front pipe, the exhaust brake valve and the exhaust rear pipe.

[0017] Preferably, the exhaust brake valve comprises:

[0018] an exhaust brake bottom plate;

[0019] a cylinder fixedly installed at one side of the exhaust brake bottom plate;

[0020] a valve seat fixedly installed at the other side of the exhaust brake bottom plate;

[0021] a disc rotatably arranged inside the valve seat.

[0022] Preferably, the output end of the cylinder is capable of driving the disc to rotate.

[0023] Preferably, a plurality of selectable exhaust holes are arranged through the disc.

[0024] Preferably, the intake end of the cylinder is connected with the air storage unit.

[0025] Preferably, the air storage unit comprises:

[0026] an air storage cylinder for storing compressed air;

[0027] a nylon pipe installed between the air storage cylinder and the intake end of the cylinder.

[0028] Preferably, an electromagnetic valve is installed between the nylon pipe and the intake end of the cylinder.

[0029] Preferably, the electromagnetic valve is signal connected with the data processor.

[0030] The utility model discloses an exhaust brake whole vehicle performance test equipment, and it has the beneficial effects as follows:

[0031] 1. The exhaust brake vehicle performance test equipment, through the air pressure sensor directly installed on the exhaust brake valve, can detect the exhaust passage back pressure in real time and accurately, and transmit the data to the data processor for display, so that the test personnel can intuitively understand the working state of the exhaust brake system. The exhaust brake valve adopts the mode that the cylinder drives the disc to rotate, realizes the accurate control of the opening and closing of the exhaust passage. The multiple selectable air release holes arranged on the disc further increase the flexibility of the control, and the air release holes with appropriate aperture and quantity can be selected according to different test requirements. The whole equipment structure is compact, the connection between the components is reasonable, the engine, the exhaust unit, the air storage unit and the data processor are organically integrated, and the overall performance and reliability of the test equipment are improved.

[0032] 2. The exhaust brake vehicle performance test equipment, the air storage unit provides stable compressed air source for the exhaust brake valve, so that the exhaust brake valve can be quickly and reliably opened and closed. The setting of the electromagnetic valve makes the on-off control of the compressed air more intelligent, and the accurate operation can be performed according to the instruction of the data processor. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0034] Fig. 1 It is a schematic diagram of the overall structure of the present application.

[0035] Fig. 2 It is a schematic diagram of the structure of the exhaust brake valve of the present application.

[0036] Fig. 3 It is a schematic diagram of the structure of the disc of the present application.

[0037] In the figure: 1, engine; 2, exhaust unit; 21, exhaust brake valve; 211, exhaust brake bottom plate; 212, cylinder; 213, valve seat; 214, disc; 215, air release hole; 22, air pressure sensor; 23, pre-exhaust pipe; 24, post-exhaust pipe; 3, air storage unit; 31, air cylinder; 32, nylon tube; 33, electromagnetic valve; 4, data processor. DETAILED DESCRIPTION

[0038] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0039] The exhaust brake whole vehicle performance test device provided by the embodiment of the present application solves the problem of how to accurately confirm the exhaust brake back pressure of a light truck model, which cannot often select a constant pressure exhaust brake valve due to arrangement reasons, the exhaust back pressure cannot be adjusted, the back pressure data is not monitored, and only experience data is relied on, and the exhaust brake effect is poor when the back pressure is too large to cause damage to the engine throttle solenoid valve, and the back pressure is too small. The gas pressure sensor 22 is directly installed on the exhaust brake valve 21, which can detect the exhaust passage back pressure in real time and accurately, and transmit the data to the data processor 4 for display, so that the test personnel can intuitively understand the working state of the exhaust brake system. The plurality of selectable air release holes 215 provided on the disc 214 further increase the flexibility of control, and the air release holes 215 with appropriate aperture and quantity can be selected according to different test requirements.

[0040] In order to better understand the above technical solutions, the above technical solutions will be described in detail in combination with the drawings of the specification and specific embodiments.

[0041] The utility model embodiment discloses an exhaust brake whole vehicle performance test device.

[0042] According to the drawings Figs. 1-3 As shown in the figure, comprising:

[0043] Engine 1;

[0044] Exhaust unit 2, with engine 1 is connected, and exhaust unit 2 includes:

[0045] Exhaust brake valve 21, for the opening and closing of engine 1 exhaust passage;

[0046] Gas pressure sensor 22, it is installed on exhaust brake valve 21, and gas pressure sensor 22 is used to detect exhaust passage back pressure;

[0047] Gas storage unit 3, with exhaust brake valve 21 is connected, and gas storage unit 3 is used to assist the opening and closing of exhaust brake valve 21;

[0048] Data processor 4, with gas pressure sensor 22 signal connection, for displaying exhaust passage back pressure.

[0049] The air pressure sensor 22 is directly installed on the exhaust brake valve 21, which can detect the back pressure of the exhaust passage in real time and accurately, and transmit the data to the data processor 4 for display, so that the tester can intuitively understand the working state of the exhaust brake system. The exhaust brake valve 21 adopts the mode that the cylinder 212 drives the disc 214 to rotate, which realizes the accurate control of the opening and closing of the exhaust passage. The multiple selectable air release holes 215 provided on the disc 214 further increase the flexibility of the control, and the air release holes 215 with appropriate aperture and quantity can be selected for exhaust according to different test requirements. The whole equipment has compact structure, reasonable connection between components, realizes the organic integration of the engine 1, the exhaust unit 2, the air storage unit 3 and the data processor 4, and improves the overall performance and reliability of the test equipment.

[0050] The air storage unit 3 provides stable compressed air source for the exhaust brake valve 21, which ensures that the exhaust brake valve 21 can be quickly and reliably opened and closed. The setting of the electromagnetic valve 33 makes the on-off control of the compressed air more intelligent, which can be accurately operated according to the instruction of the data processor 4.

[0051] It is particularly disclosed that the exhaust unit 2 further comprises:

[0052] The exhaust front pipe 23 is installed between the engine 1 and the air inlet end of the exhaust brake valve 21.

[0053] The exhaust rear pipe 24 is installed at the air outlet end of the exhaust brake valve 21.

[0054] Further, the exhaust passage is composed of the internal space of the exhaust front pipe 23, the exhaust brake valve 21 and the exhaust rear pipe 24.

[0055] It is particularly disclosed that the exhaust brake valve 21 comprises:

[0056] The exhaust brake bottom plate 211;

[0057] The cylinder 212 is fixedly installed on one side of the exhaust brake bottom plate 211;

[0058] The valve seat 213 is fixedly installed on the other side of the exhaust brake bottom plate 211;

[0059] The disc 214 is rotationally arranged in the interior of the valve seat 213.

[0060] The exhaust brake valve 21 is the core component of the exhaust unit 2, which is used to control the opening and closing of the exhaust passage of the engine 1. It includes an exhaust brake bottom plate 211, a cylinder 212, a valve seat 213 and a disc 214. The cylinder 212 is fixed on one side of the exhaust brake bottom plate 211, the valve seat 213 is fixed on the other side, the disc 214 is rotatably arranged inside the valve seat 213, the output end of the cylinder 212 can drive the disc 214 to rotate, and a plurality of optional air vents 215 are arranged on the disc 214. The air pressure sensor 22 is installed on the exhaust brake valve 21, which is used to detect the back pressure of the exhaust passage. The exhaust front pipe 23 is installed between the engine 1 and the air inlet end of the exhaust brake valve 21. The exhaust rear pipe 24 is installed at the air outlet end of the exhaust brake valve 21. The exhaust passage is composed of the internal space of the exhaust front pipe 23, the exhaust brake valve 21 and the exhaust rear pipe 24.

[0061] Further, the output end of the cylinder 212 can drive the disc 214 to rotate.

[0062] Further, a plurality of optional air vents 215 are arranged through the disc 214.

[0063] Further, the air inlet end of the cylinder 212 is connected with the air storage unit 3.

[0064] It is particularly disclosed that the air storage unit 3 includes:

[0065] The air cylinder 31 is used to store compressed air;

[0066] The nylon pipe 32 is installed between the air cylinder 31 and the air inlet end of the cylinder 212.

[0067] Further, the electromagnetic valve 33 is installed between the nylon pipe 32 and the air inlet end of the cylinder 212.

[0068] Further, the electromagnetic valve 33 is signal connected with the data processor 4.

[0069] The air cylinder 31 is used to store compressed air, which provides air source for the exhaust brake valve 21. The nylon pipe 32 is installed between the air cylinder 31 and the air inlet end of the cylinder 212, which is used to transmit compressed air. The electromagnetic valve 33 is installed between the nylon pipe 32 and the air inlet end of the cylinder 212, which is used to control the on-off of the compressed air, and is signal connected with the data processor 4.

[0070] When the engine 1 rotation speed, throttle position parameters meet the preset test conditions, the data processor 4 automatically triggers the test. The data processor 4 sends an electrical signal, the electromagnetic valve 33 opens, the compressed air of the air cylinder 31 enters the cylinder 212 through the nylon tube 32. The cylinder 212 piston pushes the disc 214 to rotate, closes the exhaust passage, forces the engine 1 exhaust back pressure to rise. The air pressure sensor 22 detects the exhaust passage back pressure in real time, and transmits the data to the data processor 4. The data processor 4 displays the current back pressure value, and compares with the preset threshold value. If the back pressure exceeds the threshold range, the data processor 4 issues an alarm, and records the abnormal data.

[0071] When the test time reaches the set value or is manually terminated, the data processor 4 sends an instruction to close the electromagnetic valve 33. After the cylinder 212 loses air pressure, the disc 214 resets under the action of the spring force, and the exhaust passage is reopened. The data processor 4 saves the back pressure and time data during the test.

[0072] By replacing the disc 214 or adjusting the position between multiple discs 214, the exposed area of the air bleed hole 215 can be changed. The air pressure sensor 22 is directly installed on the valve seat 213 of the exhaust brake valve 21, ensuring that the real back pressure in the exhaust passage is detected.

[0073] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. An exhaust brake vehicle performance test apparatus characterized by, The application relates to an exhaust unit (2) of an engine (1), which comprises: an exhaust brake valve (21) for opening and closing an exhaust passage of the engine (1); an air pressure sensor (22) installed on the exhaust brake valve (21) and used for detecting the back pressure of the exhaust passage; a gas storage unit (3) connected with the exhaust brake valve (21) and used for assisting the opening and closing of the exhaust brake valve (21); and a data processor (4) connected with the air pressure sensor (22) and used for displaying the back pressure of the exhaust passage. The exhaust unit (2) further comprises: an exhaust front pipe (23) installed between the engine (1) and the air inlet end of the exhaust brake valve (21); and an exhaust rear pipe (24) installed at the air outlet end of the exhaust brake valve (21). The exhaust passage is composed of the internal space of the exhaust front pipe (23), the exhaust brake valve (21) and the exhaust rear pipe (24). The exhaust brake valve (21) comprises: an exhaust brake bottom plate (211); a cylinder (212) fixedly installed on one side of the exhaust brake bottom plate (211); a valve seat (213) fixedly installed on the other side of the exhaust brake bottom plate (211); and a disc (214) rotatably arranged in the valve seat (213). The output end of the cylinder (212) can drive the disc (214) to rotate. A plurality of optional air release holes (215) are arranged through the disc (214). The air inlet end of the cylinder (212) is connected with the gas storage unit (3).

2. The exhaust brake vehicle performance test apparatus according to claim 1, wherein The gas storage unit (3) comprises: a gas storage cylinder (31) used for storing compressed air; and a nylon pipe (32) installed between the gas storage cylinder (31) and the air inlet end of the cylinder (212). An electromagnetic valve (33) is installed between the nylon pipe (32) and the air inlet end of the cylinder (212). The electromagnetic valve (33) is connected with the data processor (4).

3. The exhaust brake vehicle performance test apparatus of claim 2, wherein, ​ 4. The exhaust brake vehicle performance test apparatus of claim 1, wherein, ​ ​ ​ ​ ​ 5. The exhaust brake vehicle performance test apparatus of claim 4, wherein, ​ 6. The exhaust brake vehicle performance test apparatus of claim 4, wherein, ​ 7. The exhaust brake vehicle performance test apparatus of claim 4 wherein, ​ 8. The exhaust brake vehicle performance test apparatus of claim 7, wherein, ​ ​ ​ 9. The exhaust brake vehicle performance test apparatus of claim 8, wherein, ​ 10. The exhaust brake vehicle performance test apparatus of claim 9, wherein, ​

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