Browse Publications Technical Papers 2008-01-1353
2008-04-14

Fault Diagnosis of Fully Variable Valve Actuators on a Four Cylinder Camless Engine 2008-01-1353

Fully Variable Valve Actuation (FVVA) systems enable to employ a wide range of combustion strategies by providing the actuation of a gas exchange valve at an arbitrary point in time, with variable lift and adjustable ramps for opening and closing. Making such a system ready for the market requires appropriate fault-diagnostic functionality. Here, we focus on diagnosis possibilities by using air intake system sensors such as Manifold Absolute Pressure (MAP) sensors. Results obtained on a 4-cylinder test bench engine are presented for the early intake opening strategy under different loads, and at medium range rotational speeds on steady-state conditions. It is shown that detection and identification of the different critical faults on each actuator is possible by using a Fourier series signal model of the MAP sensor.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
We also recommend:
TECHNICAL PAPER

Experimental and Numerical Study of an Electro-Hydraulic Camless VVA System

2008-01-1355

View Details

TECHNICAL PAPER

Valve-Event Duration Reduction Through Ultra-Fast Phaser Actuation

2007-01-1281

View Details

JOURNAL ARTICLE

Development of Continuous Variable Valve Event and Lift Control System for SI Engine (VEL)

2008-01-1348

View Details

X