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
- Input voltage and current
- Output speed and torque
- Temperature
- Temperature rise test
- Torque speed characteristic test
- Overall efficiency test of motor and controller
- Regenerative energy feedback test (observe the generating current
of the tested motor)
- Maximum working speed test
- Overload capacity of motor and controller
- Rated power test
- 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)
- Mechanical bench: used to install the tested motor, electric
dynamometer, torque sensor, etc.
- The digital frequency conversion speed regulation system is used to
control the electric dynamometer.
- Motor parameter measurement and acquisition system. Including the
conversion of all test parameters of the motor test system
- Collection, calculation, etc. It is equipped with a set of voltage
and current transformers to collect the electrical parameters of
the motor.
- A set of industrial control computers and motor test control
software.
Flow chart
