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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 NVH End-of-Line Test Bench (NVH Test)
SUMMARY
Engine NVH EOL test bench adopts professional NVH analyzer to test vibration of cylinder head, intake/discharge sides of engine without ignition of engine (cold status). Besides, Engine NVH EOL test bench monitors engine oil pressure and torque during the entire test process, and check if assembling faults and part quality faults exist or not on basis of test results.
APPLICATION - Gasoline engine EOL test
- Diesel engine EOL test
 

FUNCTIONS
AND FEATURES
- Engine is not ignited during test; no coolant and fuel is needed; no exhausted gas and liquid;
- Adopt professional NVH analyzer from 3rd party (Reilhofer EOL vibration analyzer), which provides overall
   analysis of vibration signal at different rotation to detect possible faults of engine rotating parts
TEST ITEM - High Speed NVH Test - Low Speed NVH Test
- Safe Torque Monitoring - Safe Oil Pressure Monitoring
PRODUCT BEAT - Tempo≤60s (feeding and discharging included)
PARTIALLY
DETECTABLE
DEFECT
Balance shaft locking Ignition fault:
engine cannot be started
Chain tensioner locked
Balance shaft gearing chain deviates from chain wheel Crankshaft abnormal sound Chain tensioner bent
Balance shaft installation deviation Cylinder head abnormal sound Chain tensioner cannot be charged with oil
Bearing damage (e.g main bearing, link rod bearing) Camshaft bearing: loose bolt No oil supply for chain tensioner
Accessory damage (e.g A/C compressor) Dirty oil way Swinging arm deviation
Loose camshaft installation,
balance shaft installation deviation
Oil pump inlet O ring missing Tappet hole too big
Bent exhaust valve Loose bolt at oil pump inlet Turbocharger damaged
Shortened chain tensioner spring Main bearing bushing missing Chain driving, chain wheel defected,
no oil supply for chain tensioner
Broken chain tensioner spring Hydraulic tappet cannot rise Crankshaft unbalanced
Loose camshaft installation Hydraulic tappet missing Shaft bushing missing
Camshaft abnormal sound Loose oil pump bolt Chain driving: chain wheel defected
Camshaft geometry defects
(base circle, angle, inflection point abnormal)
Oil way to hydraulic
tensioner blocked
Cylinder head bearing damaged
Camshaft bearing: loose bolt,
broken chain tensioner spring
Corrosion hole on cylinder tube Left pilot and right pilot are different
SOME
CHINESE USERS

- Ganzhou plant/Nanchang plant, GETRAG Company
- ZF (Hangzhou) Transmission Plant
- Yantai plant, Shanghai Automobile Gear Works
- Chery Automobile
- Changchun plant, FAW-VOLKSWAGEN
- Chengdu plant, FAW-VOLKSWAGEN
- DCT EOL test, FAW Car

- Tsingshan Transmission Plant
- Geely Automobile
- JAC Liuan Transmission Plant
- Hefei AAM Automotive Driveline &Chassis
   System Co., Ltd.
- Jinan Heavy Duty Transmission Plant
- Zhuzhou Gear Co., Ltd.
- Dongan Gearbox Plant
CLIENTS OF
REILHOFER KG