Engine three-high mobile box type test bench

Abstract

The utility model discloses a kind of engine three high mobile box type test benches, including test group and process group being installed on flatbed trailer, test group includes test container and the engine test system being set in test box, engine test system includes dynamometer, fuel consumption instrument, fuel temperature control device, intercooling temperature control device, three-dimensional fast tuning support, data collection sensor and data processor, engine test system is used to collect data collection and processing of engine exhaust emission test, engine intercooling test and engine fuel supply test;Process group includes process box and the auxiliary system being set in process box, and auxiliary system includes cooling water supply system, refrigerated water supply system, generator set, compressed air supply system and laboratory ventilation system.The beneficial effects of the utility model are: the technical scheme is integrated, modular design is realized, the efficient, real test of engine performance under extreme environment, with economy, environmental protection and practicality.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a mobile box-type test bench for engines with high temperature, high humidity, and high performance. Background Technology

[0002] As the core power source for vehicles, construction machinery, and other equipment, the performance of engines in extreme environments such as high altitudes, high temperatures, and high humidity directly affects the reliability and applicability of the equipment. To evaluate engine operation in extreme environments, traditional techniques primarily rely on plains-based simulation tests. However, this approach has the following limitations: Currently, engine testing in plains-based environments simulating high-altitude conditions mainly employs two schemes: Full-cabin simulation: This involves simulating the low pressure and low temperature conditions of high altitudes within a closed test chamber. While this scheme covers the overall operating environment of the engine, it has significant shortcomings: First, the test chamber must withstand the pressure difference between the inside and outside (e.g., high-altitude air pressure is approximately 50% of that at sea level), requiring extremely high structural strength and resulting in high construction and maintenance costs. Second, it carries significant operational risks; improper pressure control could lead to structural deformation or even safety accidents. Third, it consumes large amounts of resources; maintaining a low-pressure environment requires continuous energy input, making it economically inefficient. Intake and exhaust simulation mode: This only simulates the engine's intake and exhaust systems (e.g., simulating high-altitude intake conditions by adjusting intake pressure and temperature). While this scheme reduces construction costs, it fails to accurately reflect the engine's actual operating conditions in high-altitude environments. Specifically, the following issues arise: the engine crankcase exhaust is directly exposed to the atmosphere, making it impossible to simulate crankcase leakage problems under low-pressure conditions (such as piston ring oil pumping or turbocharger oil leakage leading to oil combustion); for adjustable turbochargers with bleed valves, the bleed performance cannot be accurately simulated, resulting in a deviation between the engine's boost effect and actual high-altitude operation; some key performance parameters cannot be effectively measured (e.g., during smoke measurement, particles cannot adhere properly to the filter paper due to pressure differences); and the fuel tank pressure system is not simulated, leading to discrepancies between the actual performance of the fuel supply system (such as fuel evaporation and flow resistance) and real-world high-altitude operation.

[0003] Therefore, it is necessary to develop a mobile, field-testable engine high-altitude, high-temperature, high-humidity, and high-temperature mobile box-type test bench. After searching, no technical solution identical to this utility model was found. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a mobile box-type test bench for engines with high temperature, high humidity, and high speed, thereby solving one or more of the above-mentioned prior art problems.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a mobile box-type test bench for engines with high temperature, high humidity, and high performance. Its innovation lies in that it includes a test group and a process group that can be installed on a flatbed trailer. The test group includes a test container and an engine testing system installed within the test container. The engine testing system includes a dynamometer, a fuel consumption meter, a fuel temperature control device, an intercooler temperature control device, a three-dimensional quick-adjustment bracket, data collection sensors, and a data processor. The engine testing system is used to collect and process data from engine exhaust tests, engine intercooler tests, and engine fuel supply tests. The process group includes a process box and auxiliary systems installed within the process box. The auxiliary systems include a cooling water supply system, a chilled water supply system, a generator set, a compressed air supply system, and a laboratory ventilation system.

[0006] In some implementations, the external dimensions of the test chamber and process chamber comply with road transport regulations, facilitating their transport by flatbed trailer to test sites in high-altitude or high-temperature environments for on-site testing.

[0007] In some embodiments, the cooling water supply system in the auxiliary system includes a cooling tower, a circulating water pump, and cooling circulation pipelines; the cooling tower is a low-noise, side-exhaust stainless steel cooling tower, and the circulating water pump is a horizontal self-priming pump.

[0008] In some embodiments, the chilled water supply system includes an air-cooled chiller unit equipped with a stainless steel water tank and a high-flow-rate dedicated water pump for providing 7°C chilled water to regulate fuel temperature.

[0009] In some embodiments, the compressed air supply system includes a screw air compressor, an air tank, an air dryer, and a filter device. The air compressor is designed for low noise and environmental protection and is used to provide clean air to the shock absorption system and the pneumatic diaphragm pump.

[0010] In some embodiments, the fuel supply system includes a fuel tank and a pneumatic diaphragm pump; the fuel tank is made of stainless steel and is equipped with a flame-retardant breather valve, an overflow port, a drain port, and an electric remote magnetic level gauge; the pneumatic diaphragm pump uses compressed air as a power source to deliver fuel.

[0011] In some embodiments, the laboratory ventilation system includes a low-noise industrial axial flow fan, the fan housing of which is made of high-strength bolted steel plate with a rust-removing and baking paint finish.

[0012] In some embodiments, the test chamber is equipped with a sound absorption and noise reduction system, a fire protection system, and a floor vibration damping system, wherein the sound absorption and noise reduction system is used to reduce noise pollution during engine testing.

[0013] The beneficial effects of this utility model are: Mobility: The standard container design complies with road transport regulations and can be quickly deployed to any test site, avoiding deviations caused by fixed test benches simulating the environment; Data accuracy: On-site testing in high-altitude and high-temperature environments accurately reflects engine performance under real extreme conditions; Environmental protection and energy saving: Cooling water and chilled water are recycled, reducing water waste; Low-noise equipment reduces environmental noise pollution; Safety and reliability: The fuel supply system's liquid level monitoring, the leak-free design of the pneumatic diaphragm pump, the explosion-proof characteristics of the compressed air drive, and the multiple protections of the fire protection system ensure test safety; Strong adaptability: The three-dimensional quick-adjustment bracket supports the installation of different engine models, and the dynamometer can be expanded to test components such as gearboxes, making it suitable for a wide range of applications. In summary, this high-altitude, high-temperature, and high-temperature mobile box-type test bench for engines, through integrated and modular design, achieves efficient and realistic testing of engine performance under extreme environments, combining economy, environmental protection, and practicality. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0015] Figure 1 This is an external view of the test chamber of a mobile box-type test bench for engine high-altitude, high-temperature, high-humidity and high-temperature performance.

[0016] Figure 2 This is an external view of the process box of a mobile box-type test bench for high-altitude, high-temperature, and high-humidity engines according to this utility model.

[0017] Figure 3 This is an elevation layout diagram of the test chamber of a mobile box-type test bench for engine with high temperature, high humidity, and high speed.

[0018] Figure 4 This is a plan view of the process box of a mobile box-type test bench for high-altitude, high-temperature, and high-relief engines according to this utility model.

[0019] Figure 5 This is a system diagram of the test chamber inside a mobile box-type test bench for high-altitude, high-temperature, and high-humidity engines, according to this utility model.

[0020] Figure 6 This is a system diagram of the process of a mobile box-type test bench for high-altitude, high-temperature, high-humidity, and high-temperature engines according to this utility model. Detailed Implementation

[0021] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] like Figures 1 to 6 As shown, this utility model embodiment includes: an engine high-altitude, high-temperature, high-temperature mobile box-type test bench, suitable for on-site performance testing of engines in extreme environments such as high altitude (5000 meters) and high temperature. Its specific implementation method, combined with its structural composition, working principle and technical advantages, is described as follows:

[0023] The core of this test bench is the integrated design of the experimental group and the process group, both of which are mounted on a dedicated flatbed trailer, as detailed below:

[0024] Test Set: Includes Test Box 100 and the engine testing system set inside the box; Test Box 100 adopts a standard container structure, and its external dimensions strictly comply with the requirements of road transport regulations (length ≤ 12.2m, width ≤ 2.55m, height ≤ 4m). It is fixed to a flatbed trailer with bolts and can be quickly transported to test sites in high-altitude and high-temperature environments to achieve on-site testing.

[0025] Process group: includes process box 200 and auxiliary systems installed inside the box; process box 200 and test box 100 are installed side by side on the same or different trailers, and the two are connected by pipelines (cooling water pipe, fuel pipe, compressed air pipe) and cables to form an independent test functional unit.

[0026] The engine testing system is used to collect data from engine exhaust smoke tests, intercooler tests, and fuel supply tests. Its specific components and functions are as follows:

[0027] Core test components:

[0028] Dynamometer 101: The eddy current dynamometer 101 is used with a rated power of 500kW to measure the engine output torque, speed and power, and can simulate the gearbox loading conditions.

[0029] Fuel consumption meter 102: High-precision mass fuel consumption meter 102 (accuracy ±0.1%), which synchronously collects engine speed and torque signals through a serial communication interface to realize real-time measurement of fuel consumption rate.

[0030] Fuel temperature control device 103: integrates electric heating module and chilled water heat exchange coil, and stabilizes fuel temperature at 40±2℃ through PID controller to avoid the impact of temperature fluctuation on combustion efficiency.

[0031] Intercooler temperature control device 104: It regulates the inlet and outlet temperatures of the intercooler by circulating cooling water to keep the engine intake air temperature at 100±5℃, thus ensuring the thermal management stability of the intake system.

[0032] Three-dimensional quick-adjustment bracket 105: adopts X / Y / Z axis manual adjustment mechanism (adjustment range ±100mm), adapts to the installation requirements of different engine models (such as diesel engine and gasoline engine), and realizes the quick alignment of engine and dynamometer 101 (coaxiality error ≤0.1mm).

[0033] Data Acquisition and Processing: Equipped with 8-channel data collection sensors (temperature, pressure, and flow sensors, accuracy ±0.5%FS) to collect parameters such as exhaust gas temperature, intercooler pressure, and fuel flow in real time; the data processor 106 adopts an industrial-grade PLC (Siemens S7-1200), with a sampling frequency of 1kHz, a data storage capacity of ≥1TB, and supports Ethernet remote transmission.

[0034] The auxiliary systems include a cooling water supply system, a chilled water supply system, a generator set, a compressed air supply system, and a laboratory ventilation system, with the following specific configurations:

[0035] Cooling water supply system:

[0036] Composition: Low-noise, side-exhaust stainless steel cooling tower 201 (processing capacity 100m³) 3 / h), horizontal self-priming pump (flow rate 50m³ / h) 3 / h, head 30m) and galvanized steel pipe circulation pipeline (DN80);

[0037] Function: Provides 32℃ cooling water to the dynamometer 101, intercooler and engine block, absorbs the heat of equipment operation and returns to the cooling tower 201 for cooling, forming a closed loop, with a water resource utilization rate of ≥95%.

[0038] Chilled water supply system:

[0039] Composition: Air-cooled chiller unit 301 (cooling capacity 20kW), stainless steel water tank (capacity 500L) and high-flow special water pump (flow rate 15m³ / h) 3 / h);

[0040] Function: Outputs 7℃ chilled water to the fuel temperature control device 103 and engine oil cooler, exchanges heat through a plate heat exchanger, and regulates the fuel temperature with an accuracy of ±1℃.

[0041] Compressed air supply system:

[0042] Composition: Screw air compressor 401 (displacement 3m³) 3 / min, pressure 0.8MPa), gas storage tank (volume 0.6m³) 3Air dryer (dew point ≤ -40℃) and three-stage filtration device (accuracy 1μm);

[0043] Function: Provides clean air source to air-float shock absorption system (drive airbag) and pneumatic diaphragm pump 501, air compressor noise ≤75dB(A), meets environmental protection requirements.

[0044] Fuel supply system:

[0045] Composition: 304 stainless steel oil supply tank 502 (volume 1000L), pneumatic diaphragm pump 501 (flow rate 50L / min);

[0046] Oil tank 502 is equipped with: flame-retardant breather valve (opening pressure ±2kPa), DN50 overflow port, DN25 drain port and electric remote magnetic level gauge (measuring range 0-1000mm, accuracy ±5mm), and supports remote oil level alarm (automatic cut-off of oil supply when the oil level is too high / low).

[0047] 501 Pneumatic Diaphragm Pump: Powered by compressed air (working pressure 0.4-0.6MPa), with a leak-free design, suitable for various fuel media such as gasoline and diesel.

[0048] Laboratory ventilation system:

[0049] Composition: Low-noise industrial axial flow fan (air volume 20000m³ / h) 3 / h, wind pressure 500Pa), the fan casing is made of Q235 steel plate welded and the surface is treated with rust removal and baking paint (corrosion resistance grade C3);

[0050] Function: Replaces the air in the test room 8 times per hour, controls the concentration of harmful gases such as HC and CO to ≤50ppm, and controls the room temperature to below 35℃.

[0051] Sound absorption and noise reduction system: The laboratory walls are lined with 50mm thick centrifugal glass wool (density 48kg / m³). 3 +1.2mm thick perforated aluminum alloy plate (perforation rate 20%), the smoke exhaust system is equipped with an impedance composite silencer (noise reduction ≥30dB), and the overall noise is controlled below 85dB(A).

[0052] Fire protection system: Equipped with two sets of 4kg dry powder fire extinguishers, photoelectric smoke detectors (response threshold ≤0.15dB / m) and automatic sprinkler system (linked with laboratory temperature sensor, operating temperature 68℃), meeting the requirements of the "Code for Fire Protection Design of Buildings" (GB50016).

[0053] Floor damping system: 100mm thick vulcanized rubber damping pads (Shore hardness 60±5) are used in conjunction with an air-floating airbag damping structure (natural frequency ≤3Hz) to reduce the interference of engine vibration on test data.

[0054] Transportation deployment: The test group and process group are transported to the target test site by flatbed trailers, the containers are leveled by hydraulic outriggers, and the auxiliary system pipelines and cables are connected;

[0055] System startup: The generator set (power 200kW) or external power grid (380V / 50Hz) starts, the cooling water and chilled water systems circulate, and the compressed air system builds up pressure (0.6MPa);

[0056] Trial run:

[0057] The engine is mounted and aligned via a three-dimensional quick-adjustment bracket 105, and a pneumatic diaphragm pump 501 delivers fuel from the fuel supply tank 502 to the engine.

[0058] The dynamometer 101 is loaded to the target operating condition (such as the rated speed of 2200 r / min), and the data collection sensor simultaneously collects parameters such as exhaust gas temperature and fuel consumption rate;

[0059] The ventilation system provides continuous air exchange, and the fire protection system monitors the safety status in real time.

[0060] Test completed: The engine and auxiliary systems were shut down, the data processor 106 automatically generated a test report, and the trailer transported the test bench back to the base.

[0061] This implementation method solves the problem of environmental deviation in traditional fixed test benches through modular integrated design. It has advantages such as easy mobility, data authenticity, environmental protection and energy saving, and safety and reliability, and is suitable for various extreme environmental performance testing scenarios of engines.

[0062] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A mobile box-type test bench for engines with high altitude, high temperature, and high humidity, characterized in that: The test set includes a test group and a process group that can be installed on a flatbed trailer. The test group includes a test chamber (100) and an engine test system set inside the test chamber (100). The engine test system includes a dynamometer (101), a fuel consumption meter (102), a fuel temperature control device (103), an intercooler temperature control device (104), a three-dimensional quick-adjustment bracket (105), a data collection sensor, and a data processor (106). The engine test system is used to collect and process data from engine exhaust tests, engine intercooler tests, and engine fuel supply tests. The process group includes a process box (200) and an auxiliary system set inside the process box (200). The auxiliary system includes a cooling water supply system, a chilled water supply system, a generator set, a compressed air supply system, and a laboratory ventilation system.

2. The engine high-altitude, high-temperature, high-humidity mobile box-type test bench according to claim 1, characterized in that: The external dimensions of the test chamber (100) and process chamber (200) meet the requirements of road transport regulations, making it easy to transport them by flatbed trailer to test sites in high-altitude and high-temperature environments for on-site testing.

3. The engine high-altitude, high-temperature, high-humidity mobile box-type test bench according to claim 1, characterized in that: The cooling water supply system in the auxiliary system includes a cooling tower (201), a circulating water pump (202), and cooling circulation pipelines; the cooling tower (201) is a low-noise horizontal side-exhaust stainless steel cooling tower (201), and the circulating water pump (202) is a horizontal self-priming pump.

4. The engine high-altitude, high-temperature, high-humidity mobile box-type test bench according to claim 1, characterized in that: The chilled water supply system includes an air-cooled chiller unit (301), which is equipped with a stainless steel water tank and a high-flow-rate dedicated water pump to provide 7°C chilled water to regulate fuel temperature.

5. The engine high-altitude, high-temperature, high-humidity mobile box-type test bench according to claim 1, characterized in that: The compressed air supply system includes a screw air compressor (401), an air tank, an air dryer, and a filter. The air compressor adopts a low-noise and environmentally friendly design to provide clean air to the shock absorption system and the pneumatic diaphragm pump (501).

6. The engine high-altitude, high-temperature, high-humidity mobile box-type test bench according to claim 1, characterized in that: The fuel supply system includes a fuel tank (502) and a pneumatic diaphragm pump (501); the fuel tank (502) is made of stainless steel and is equipped with a flame-retardant breather valve, an overflow port, a drain port and an electric remote magnetic level gauge; the pneumatic diaphragm pump (501) uses compressed air as a power source to transport fuel.

7. The engine high-altitude, high-temperature, high-humidity mobile box-type test bench according to claim 1, characterized in that: The laboratory ventilation system includes a low-noise industrial axial flow fan. The fan casing is made of high-strength bolted steel plate and the surface is treated with rust removal and baking paint.

8. The engine high-altitude, high-temperature, high-humidity mobile box-type test bench according to claim 1, characterized in that: The test chamber (100) is equipped with a sound absorption and noise reduction system, a fire protection system and a floor vibration damping system. The sound absorption and noise reduction system is used to reduce noise pollution during engine testing.

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