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Engine NVH End-of-Line Test Bench (NVH Test) Engine Electrical Test Bench Spark Plug Tester Engine Rotational Torque Test Bench TDI Engine Fuel System Test Bench Transmission Reliability Test Bench Engine Performance Test Bench Diesel Engine Load Hot Test Bench HEV/EV Powertrain Performance Test Bench W-Ibeda New Energy Automobile Powertrain and Vehicle Test Center Chassis Dynamometer Oil Pump Research & Development Test Bench Fawer Commercial Vehicle Steering Engine Camshaft Profile Tester Clutch Function Tester Engine Cold Test Bench

Engine Cold Test Bench
TECHNICAL
PRINCIPLE OF
COLD TEST
- Cold test is a method of quality inspection, which performs comprehensive test of assembled engines
   without combustion process. Cold test is usually performed at the end of engine assembly line.
  - Partly assembled status
Intake manifold not installed
Exhaust manifold not installed
Wiring harness not installed
- Fully assembled status
Intake manifold installed
Turbocharger installed
Wiring harness installed

- The engine flywheel is connected with cold test Equipment via an AC servo motor ,then the engine is driven
   and tested at different RPM under PC control.

- IPC collect various signals via sensors. Test software processes the signals via special test algorithm
   and compare with the accelerometer to judge if the engine is assembled correctly, if the components are
   qualified.

   
step1   harness test/sensor static test/actuator dynamic test/static ignition test
step2   start torque test
step3   safe oil pressure test/high pressure fuel leakage test/crankshaft cam timing test
step4   high speed oil pressure test/high speed NVH test/VVT test/turbocharger test
step5   intake vacuum test/fuel system dynamic test
step6   low speed oil pressure test/low speed NVH test/discharge pressure test/running
           torque test

step7   throttle test
CHARACTERISTICS OF COLD TEST TECHNOLOGY
User is able to find out engine assembling defects and component quality failures in advance via cold test technology to promote engine quality.
  Cold Test
- No fuel consumption,low cost
- No coolant needed,No emission,Low
   test noise level
- Short test cycle(Min.60s)
- Small floor area,online test is supported
- Components of unqualified engine can
   be recycled
- Few support engineers
  Hot Test
- Huge consumption of fuel,high cost
- Coolant needed,Exhaust collection
   facility needed
- High test noise,sound proof room
   needed
- Long test cycle(at least 5 minutes)
- Huge floor area,isolated test room
   needed
- Components of unqualified engine can
   not be recycled
- More support engineers
With cold test, user can not only perform comprehensive test of engine assembly, but also test quality of engine components.
Cold test technology has many advantages, such as short test cycle, high efficiency, high test accuracy, more test items, no fuel needed, no combustion, low noise, no emission, components of defect engine can be recycled,and so on.
ENGINE DEFECT MAPPING
HUAYI MADE COLD TEST EQUIPMENT ADVANTAGE - 15 years of engine cold test development and manufacturing experience. Technology and reliability is adopted and recognized by world famous automotive manufacturers and we already own many references in China;
- We have test technology experts from all over the world to provide advanced cold test equipment to meet requirements of modern automobile industry, and follow the international advanced cold test technology to keep updating ours;
- We own cold test patented technology completely. Provide more convenient and efficient communication with customers during the whole life cycle of the cold test equipment;
- Fast local after-sales service;
- Equipment investment is much lower than that of foreign manufacturers. Provide all sets of spare parts, after-sales service and equipment updating with higher cost-efficiency.
KEY ACCOUNT - W-Ibeda’s products have been widely used in various large automobile and engine manufacturers around
   the world. Our main customers are: Shanghai Automotive Industry Corporation (SAIC), China First Auto
   Works Group (FAW), General Motors(GM), Dongfeng Group, Changan Group, Beijing Automotive
   Group(BAIC), Mazda, Ford, Jianghuai Auto(JAC), Chery Automobile, Nissan (Brazil), Meidensha (Japan),
   Weichai Power, etc..
CLASSIFICATION OF COLD TEST EQUIPMENT- LAYOUT
SYSTEM OF COLD TEST EQUIPMENT- TEST BENCH SOFTWARE SYSTEM
Test Module
Engine Rotation Control
Engine Qualification Judgement
Engine Actuators Control
Test Log
Engine Data Acquisition
PLC Monitor
Data Processing
Test Curves Display
SYSTEM OF COLD TEST EQUIPMEN- DATA QUERY AND STORAGE SYSTEM
- Repair Software
Online engine test data query
Historical engine test data query
Repair suggestion
Waveform overlaying
Test waveform display
Test data print
Network connection diagnosis
- Report Software
Test parameter normal distribution report
Limits setting
Scatter diagram report
Tendency chart report
TOP10
Top100 default parameter report
Test first-pass rate report
Test parameter report
COLD TEST PROJECT
      Mechanical
Test
       Electrical
Test
               Continuous
             Monitoring

  - Start torque test
- High speed oil pressure test
- Low speed oil pressure test
- NVH test
- Intake vacuum test
- Discharge test
- Running torque test
- VVT test
- Turbocharger test
- Fuel rail leakage test
- Wiring harness test
- Static high pressure ignition test
- Static low pressure ignition test
- Crankshaft cam timing test
- Sensors static test
- Throttle test
- Fuel system dynamic test
- Injector motion test
- Torque monitor
- Oil pressure monitor
- NVH monitor

  Crankshaft Cam Timing
Test
Check:
Crank / cam phase tooth machining error
Crank / cam position sensor fault
Cam crank timing error
Others
  VVVT Test
Check:
OCV oil gallery block
OCV electrical fault
VVT phaser stuck
VVT open angle error
VVT open not stable
Others
 
    Low Speed Oil Pressure
Test
Check:
Crankshaft oil gallery leakage/block
Camshaft oil gallery leakage/bloc
Crankshaft / Camshaft oil hole machining error
Oil pump fault
...
  Injector Motion Test
Check:
Injector open stuck
Injector control solenoid valve fault
Injector not closed tightly / leakage
Others
  Discharge Pressure Test
Check:
Discharge valve gap out of tolerance
Discharge valve broken
Spark plug loose/missing
Crankshaft Cam timing error
Others
  Static Ignition Test
Check:
Spark plug gap out of tolerance
Ignition coil short/open
High voltage wiring broken
Spark plug electrode fault
Others
 
    NVH Vibration Test
Check:
Foreign matter in combustion chamber
Rotary parts interference
Rotary parts unbalance
Others
  Turbocharger Test
Check:
Turbocharger outlet pressure abnormal
Turbocharger rotation not stable
Turbocharger exhaust by-pass valve stuck
Turbocharger intake by...


2019年马报第2期开奖现场