Virtual Multi Cylinder Engine Transient Test System

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Dynamic and Transient Engine Testing Applications,System requirements and modular structures

Presented by :

Hans Peter Dohmen

Gerald Fehl Schen Pegasus Gmbh

SAE Technical Paper no ! "#$"%#


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&' Dynamic and Transient Engine Testing Applications,System requirements and modular structures

()AD to (*G


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Purpose

(oad to (ig + characteristics o dri-erand -ehicle are simulated close toreality or engine installed in the teststand .ith the help o dynamometer,

enabling reduction o productde-elopment times

Dynamic Engine /alibration +

-eri0cation o comple1 E/2 algorithms.ith respect to -arious operatingconditions

Emission Testing


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System (equirement + 3odules and

*nteraces


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3odularity : Test stand should ha-emodular structure .ith standardi4ed

interaces to enable adaptation tone. testing

5 ma6or modules around thespecimen i'e' Engine are : Dynamometer :7 types

/ontroller :control dynamometer, (8Scompatible

3easuring system : or e1haust and uelconsumption

Automation system: runs the -arious


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9ehicle model to road loadsimulation(8S;


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/alculation methodology The controller must be complemented by (8S

sot.are to enable transient testing

This is used to simulate all orces acting on the-ehicle and to reproduce them at the engineinterace ie


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9irtual 3ulti cylinder Engine

Transient Test System

Presented by>ohn >' 3os.a, Dere A' 3angun

P/(8, 2ni-ersity o ?isconsin

Austin (' 8eme, >ohn 8' 8ahti et al Enerpac, G3 Po.ertrain etc

SAE Technical Paper no + $@@"!$5!@&@


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$' 9irtual 3ulti cylinderEngine Transient Test

System Done at P/(8Po.ertrain /ontrol (esearch

8aboratory;, 2ni-' o ?isconsin

Approach + a transient system or singlecylinder system that replicates dynamics oa multi cylinder engine

Test system includes a dynamic model o

the entire multi!cylinder engine that runs inreal time

3odel computes instantaneous torque

tra6ectory and dyno applies it to engine


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Set up


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Subsytems

(otationalDynamics

Bo


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(eerences to note

2S Patent C@#%% + *nternal/ombustion Engine Simulation and

Testing

Transient 3ulti /ylinder *ntaeDynamics simulated on a singlecylinder engine

Documents

Virtual Multi Cylinder Engine Transient Test System