SSCG110 110KW 350Nm Integrated small stand for gasoline engine and motor test system

Introduction

The engine test bench is a laboratory test bench specially designed for engine load laboratory. Its core is an electric dynamometer system with energy feedback and a master control system, and is equipped with peripheral measuring facilities and auxiliary facilities according to the need, which can be used for durability test, quality sampling test and performance test of various gasoline engines and diesel engines.

Function
1, test parameters: speed, torque, power, exhaust temperature, oil temperature, oil pressure, water temperature, fuel consumption rate
2. Print the test time and above test parameters in form
3, parameter display mode: LIQUID crystal display
4, automatic control mode: constant position, constant speed, constant torque
5, control mode switching: no disturbance random dynamic switching
6. Engine speed characteristic test, load characteristic test and external characteristic test
7, digital set speed, torque value, digital PID automatic control (example: through the instrument digital set torque 2700N.m, dynamometer automatically loaded to 2700N.m within 5 seconds)

Engine overhaul test bench (turnkey project)

I. Engine type to be tested
1, PC1250-8R excavator engine SAA6D170E-5 (515KW)
2, PC450 excavator engine SAA6D125E-5
3, D155 bulldozer engine SAA6D140E-5
4, G705 road machine engine SAA6D114E-5
5, mountain grader engine SC9D220G2
6. Engine WD106240E203 of mountaineer loader
7. MTU engine 16V4000 (1798KW)
8, Cummins engine QSX15-G8 (414KW)
9. Cummins D57 engine QST30-G3 (805-910KW)
(2) Requirements for the selection of dynamometer system
To be able to achieve continuous power measurement for different types of engines with different power below 2000KW.

Test items

1. Input voltage and current
2. Output speed and torque
3. Temperature
4. Temperature rise test
5. Torque speed characteristic test
6. Overall efficiency test of motor and controller
7. Regenerative energy feedback test (observe the generating current of the tested motor)
8. Maximum working speed test
9. Overload capacity of motor and controller
10. Rated power test
11. Locked rotor test

Working principle

Dynamometer inverter control of the dynamometer motor adopts direct torque control method, the way for the center with torque for comprehensive control of flux and torque, simply by detecting motor stator voltage and current, with the aid of the instantaneous space vector theory calculation and control of flux linkage and torque of the motor, the discrete two point regulator (Band - Band control), The measured torque value is compared with the given torque value, so that the torque fluctuation is limited in a certain tolerance range, and the tolerance is controlled by the frequency regulator, and the PWM pulse width modulation signal is generated to directly control the switching state of the inverter, so as to obtain the torque output with high dynamic performance.

​Equipment composition (Reference)

1. Mechanical bench: used to install the tested motor, electric dynamometer, torque sensor, etc.
2. The digital frequency conversion speed regulation system is used to control the electric dynamometer.
3. Motor parameter measurement and acquisition system. Including the conversion of all test parameters of the motor test system
4. Collection, calculation, etc. It is equipped with a set of voltage and current transformers to collect the electrical parameters of the motor.
5. A set of industrial control computers and motor test control software.

Flow chart