Engine Manufacturing2

Engine Manufacturing Fault Detection

2 3 7 Engine Part Built

NVH as a witness of manufacturing faults

Integrated with 'cold' engine test machines, the NUREN sub-product for the core PLATO platform uses noise and/or vibration signatures to evidence engine build defects.

2 3 7 Nuren

Work-cycle locking

By analysing data locked to engine work-cycles (e.g. 720-degrees crankshaft rotation for 4-stroke engines) the system generates joint time-frequency maps where amplitude and position in the map provide the necessary clues for fault detection.

2 3 7 Balance Shaft Error

Faults readily exposed

Intelligent (and automatic) generation of reference level maps, followed by map comparisons to expose images of abnormalities, readily exposes faults.

The example here (from a 4-cylinder, 4-stroke gasoline IC engine) graphically shows how a balancer shaft installed 180-degress out of synchronisation causes an abnormal response in a sensor measuring cylinder head vibration.

Many other examples are available on request.

2 3 78 Fault Pattern Matching

Automatic fault classification

Many NUREN systems choose to add the FOCUS sub-product to objectively pattern-match fault maps generated by NUREN.

2 3 7 Camshaft Drive Error

Time (revolution) analysis completes the picture

Experience has taught us that some engine manufacturing faults require an alternative to the 1/3-octave based joint time-frequency technique used by NUREN.

Systems can therefore be configured to use the REVKIT sub-product to provide extremely high-definition revolution history averaging to detect a different class of abnormality.

The example here (from a 4-cylinder, 4-stroke gasoline IC engine) graphically shows the effect of a camshaft drive gear being displaced by a single tooth. Many other examples are available on request.

2 3 7 Opc Logo

Easily integrate to test machines

Simple OPC-communications between PLATO and test machines makes integration a breeze and, as standard, counter/timer DAQ-cards from National Instruments™ make for an extremely cost-effective engine test solution.

2 3 6 Sql

Clear, precise results

Test results are reported using PLATO’s intuitive test report, passed to the machine controller (PLC) via OPC and stored within PLATO’s results database (SQL) and optionally passed to PLATO-SERVER.

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