Product Overview

Chassis dynamometer can be used to determine the adaptability of electronic products, components, materials, etc. for use and storage under low humidity, temperature cycling, and other conditions.

The chassis dynamometer adopts the currently reasonable structure and stable and reliable control method, which makes it aesthetically pleasing, easy to operate, safe, and has High humidity control accuracy. It is an ideal equipment for conducting high and low temperature inspections.

1.2 Product Advantages and Technical Features

1.2.1 Utilize a multi-channel, environmentally friendly and energy-saving (low-noise) mechanical compression refrigeration system.

All materials, parts, components, raw materials, etc. of the chassis dynamometer, whether domestically produced or imported, shall be environmentally friendly products; Based on the characteristics of mechanical compression refrigeration, a two-stage multi-channel main and bypass system is adopted. The multi-channel main and bypass can be adaptively selected and activated according to different working conditions. The entire control is automatically implemented by an intelligent control system according to the working conditions, changing the traditional way of using a temperature controller to control the heater to offset the cooling capacity to control the cooling capacity. So as to achieve energy-saving effect, not only does the energy consumption account for only 80% of similar products.

It also reduces the operating load of the refrigeration compressor, reduces equipment vibration and noise, and improves control accuracy. To achieve better energy-saving effects, frequency conversion technology is adopted to adapt the refrigeration output of the refrigeration compressor to various temperature change rate requirements in the laboratory, while controlling the power loss during use to achieve energy-saving effects. Use sound-absorbing and silencing methods in different parts of the entire structure and mechanical working process to reduce the overall noise of the equipment.

1.2.2. Independently developed multi-channel and multi-stage throttling system (refrigeration system).

The refrigeration system of the chassis is designed with different capillary main and bypass circuits based on different operating conditions. The capillary throttling system is automatically controlled and adjusted by the intelligent communication control system according to the operating conditions, ensuring that the flow rate is adjustable and achieving the purpose of temperature change. Moreover, the temperature field changes uniformly and the temperature fluctuation is minimal.

1.2.3. Apply a broadband compression balance temperature control system to achieve rapid temperature control through a fast convergence PID adaptive algorithm.

By using a temperature mixing chamber, a static pressure chamber, and a forced air duct system with centrifugal blades, sufficient exchange of cold and heat is ensured, and air is evenly supplied through the top orifice plate to each space in the working room (experimental area) to achieve temperature uniformity; To achieve rapid temperature convergence, our company has independently developed a dedicated PID adaptive algorithm suitable for our company. This control method continuously adjusts the control according to the temperature situation during the control process, achieving the control objectives of fast sword retraction, small temperature overshoot, and high stability.

1.2.4 Implement remote visual control.

The chassis dynamometer is equipped with a human-machine management interface and a touch mode automation control system to achieve automatic control; Simultaneously, connect to remote computers through RS485 communication interface to achieve network management and remote monitoring. The entire system is controlled and managed through a graphical interface, which is simple and fast, with automatic fault prompts. The graphical prompts are energy-saving and provide solutions to guide users in quickly troubleshooting.

2. Performance indicators and system composition of chassis dynamometer

Equipment usage

The chassis dynamometer consists of an environmental temperature simulation system, an environmental humidity simulation system, a circulating air system, a fresh air system, a sunlight simulation system, and an exhaust emission system. It mainly provides environmental conditions for vehicle power performance, economic performance testing, air conditioning performance testing, thermal performance testing, etc.

Product Name

Vehicle hub integrated environmental cabin

model

WS-ZCHJC-887000D

Sample limitations

The chassis dynamometer prohibits the testing of samples containing flammable, explosive, and volatile substances; Testing for storing samples of corrosive substances, testing for storing organisms, testing and storing samples of strong electromagnetic emission sources

Volume, weight, and size

Vehicle information

Serial number

Vehicle parameters

parameter

one

Maximum external dimensions (length x width x height) (mm)

10000×2500×4200

two

Maximum curb weight of the vehicle (kg)

thirty-eight thousand

three

Maximum rated power of engine (kw)

522（700HP）

four

Maximum engine displacement (L)

fifteen

Nominal internal volume

887, 4m3

Effective size of inner box

18000 (L) x 8500 (W) x 5800 (H) mm (depth x width x height) W x H x D (mm)

Effective size of outer box

26000 (L) x 8800 (W) x 10400 (H) mm (depth x width x height) W x H x D (mm)

External transition between warehouse bodies

1500mm×1500mm×2500mm

The vehicle entrance and exit doors are electrically operated swing doors

The minimum size is 4000mm (W) × 4500mm (H), with a thickness of ≥ 150mm and 2 observation windows. The minimum size is 400mm (W) × 500mm (H), with heating function.

Warehouse personnel door and transition personnel door

The minimum size is 900mm (W) × 1900mm (H), with at least one observation window. The minimum size is 300mm (W) × 500mm (H), with heating function.

Equipment weight

About 38600 kg

Power, current, and power supply

Maximum installed power

Facing fan power: about 400kw; Refrigeration system power: approximately 300kw; Heating system power: approximately 90kw; Humidification system power: approximately 80kw; Sunshine simulation power: about 150kw; Other functional power: about 70kw; Equipment installation power: approximately 1090KW

Maximum current

The maximum current is about 1700A

Power supply conditions and sources

3 ￠ 380VAC ± 10%, 50Hz three-phase four wire+protective grounding

Voltage allowable fluctuation range: 10%

Allowable frequency fluctuation range: (50 ± 0,5) Hz

The grounding resistance of the protective grounding wire is less than 4 Ω

Require users to configure corresponding capacity air or power switches for the equipment at the installation site, and this switch must independently control the use of the equipment

performance index 

Functional requirements

1. Indoor space cooling, heating, and dehumidification;

2. According to the temperature and humidity settings, the indoor space reaches the temperature required for the set test.

Test environment conditions

The value measured under the conditions of an ambient temperature of+25 ℃, relative humidity ≤ 85%, and no sample in the test chamber.

Meet the testing standards

test method

1 GB2423, 1-2008/IEC6008-2-1-2007 Environmental testing for electrical and electronic products Part 2: Test methods Test A: Low temperature

2 GB/T  2423、 2-2008 Environmental testing for electrical and electronic products - Part 2: Test methods - Test B: High temperature

3 GJB150, 3A-2009 High Temperature Test Method

4 GJB150, 4A-2009 Low Temperature Test Method

5. GB/T 10589-2008 Technical Conditions for Low Temperature Test Chamber

6. GB/T2423, 3-2008 (IEC68-2-3) Test Ca: Constant Damp Heat Test Method

7 G/BT  2423、4-2008/IEC6008-2-30: 2005 Experiment Db: Alternating Damp Heat Method

8 GB/T5170、 18-2005 Basic parameter calibration method for environmental testing equipment for electrical and electronic products Temperature/humidity combined cycle testing equipment

9. GB/T10586-2006 Technical Conditions for Damp Heat Test Chamber

10. The requirements of standards such as GJB150-1986 and GJB150A-2009 include high temperature tests (GJB150, 3-1986, 11, GJB150, 3A-2009), low temperature tests (GJB150, 4-1986, GJB150, 4A-2009), alternating 12, and wet heat tests (GJB150, 9-1986, GJB150, 9A-2009)

13. High temperature performance test of the whole machine (GB/T 3871, 11-2005)

14. Thermal Balance Test of Engine Cooling System (JB/T 12847-2016)

15. Thermal balance test of the entire transmission system (Q/YT 542, 5-2012)

16. Air conditioning test (GB/T 13877, 2-2003)

17. Exhaust Smoke Measurement (GB/T 3871, 13-2006)

18. Power output shaft power test (GB/T 3871, 3-2006)

19. Other non-standard tests involve specific requirements for environmental conditions and determination of axle load output.

20. High temperature heat balance test and cabin air conditioning test for some harvesting machinery.

Temperature and humidity range

Temperature and humidity range

Temperature range:- 40～60℃

Humidity range: 10-98% RH (as shown in the figure)

control accuracy

Temperature resolution: 0,01 ℃

Temperature deviation: ±2℃；   

Temperature uniformity: ≤ 2. 0 ℃

Temperature fluctuation: ± 0.5 ℃

Humidity control accuracy

Humidity resolution: 0, 1% RH

Humidity deviation:> ± 3 at 75% RH, 0% RH; ≤ ± 5 at 75% RH and 0% RH

Humidity uniformity: ≤ 3%RH

Humidity fluctuation: ± 2% RH

heating rate 

Heating rate: -40 ℃ → 60 ℃, ≥ 0, 4 ℃/min (with one 38 ton vehicle parked, static).

cooling rate 

Cooling rate: 60 ℃ → -40 ℃, ≥ 0, 4 ℃/min (with one 38 ton vehicle parked, static).

Equipment composition

Environmental cabin; Humidity control system; Temperature control system; Frontal cooling system; Fresh air compensation system; Exhaust emission system; Sunshine simulation system; Environmental cabin control system; monitoring system; Safety and alarm system; Hydrogen concentration monitoring system; Spray gun, steam generator; Simulation system; Rain and snow simulation system; Automatic throttle execution device; Defrosting test image recording system; Automated refrigerant calibration system; monitoring system; Control and data acquisition system; Auxiliary facilities: spare parts

Note: The above performance indicators are measured under the conditions of an ambient temperature of+25 ℃, a water temperature of 28 ℃, and a relative humidity of ≤ 85% RH; Temperature uniformity and temperature deviation measured under the condition of no sample

1. The equipment for the test project is not limited to the following test standards:

Serial number

Experimental project

environment condition

Vehicle operating conditions

Reference standards

one

Low temperature test

-40±2℃

static state

GJB 150、4A

two

High temperature test

60±2℃

static state

GJB 150、3A

three

Vehicle start-up test after cold start

-35℃±2

After driving in low gear for 500m, accelerate to the maximum speed (100km/h) within a maximum of 15min and then stop

GB/T 12535

four

Heating test

-30℃±2℃

60km/h

Maintain for 60 minutes

GB/T 12782

five

Heating test

-30℃±2℃

40km/h

60km/h

GOST 15150

six

Cold start test

-35℃±2℃

Start and keep running for 30 minutes

GB/T 12535

seven

Defrosting and defogging test

-20 ± 1 ℃ (defrosting)

-5 ± 1 ℃ (defogging)

40km/h

SAE J381

eight

Defrosting and defogging test

-18 ± 2 ℃ (defrosting)

-3 ± 1 ℃ (defogging)

neutral gear

50% rated speed

GB  11555

GB  T 24552

nine

Thermal insulation and ventilation test

Temperature>35 ℃

Humidity range of 30% to 80%

80km/h

GB/T 12546

ten

Air conditioning test

(Refrigeration system)

normal atmospheric temperature:

Temperature 22 ℃

Humidity 70%

Wind speed 5m/s

High temperature:

Temperature 35 ℃

Humidity 40%~75%

Wind speed 5m/s

Light intensity 800W/m2

Idle speed -30 minutes

40km/h-45min

60km/h-30min

100km/h-30min

QC  T 685

eleven

Static inspection

<-30℃

static state

GB  T 28958

twelve

Speedometer odometer calibration test

18～28℃

40  ,  60km/h

GB/T 12548

thirteen

Vehicle thermal balance test

>40℃

Engine at full load

GB/T 12542

fourteen

Fuel consumption test

20～30℃

/

GB/T27840

Please contact our company for specific parameters!