Gasoline Engine Load Control Using Variable Geometry Turbine Turbochargers English

  • Category Technical paper
  • Edition SIA
  • Date 12/04/2013
  • Author H. Tang, S. Akehurst, C.J. Brace - University of Bath | S. Garrett - Cummins Turbo Technologies | L. Smith - Jaguar Land Rover
  • Language English
  • Type PDF file (261.26 Ko)
    (Downloadable immediately on receipt of online payment)
  • Number of pages 8
  • Code R-2013-06-025
  • Fee from 8.00 € to 10.00 €

The Variable Geometry Turbine (VGT) turbocharger, which has been proven on Diesel engines, has ability to improve both low end torque and fuel consumption. Because the engine load is directly related to the intake manifold pressure on conventional gasoline engines, the flexibility of varying the turbocharger operating condition efficiently by using a VGT turbocharger can be used to control the engine load.
A VGT turbocharger has been tested on a 2.0L production gasoline engine, which was originally equipped with a Fixed Geometry Turbine (FGT) turbocharger with a waste-gate. Experimental work has been carried out at wide-open-throttle (WOT) conditions at 2000 rpm. The maximum torque with the VGT turbocharger was 41Nm (15.4%) higher, and the minimum torque that can be achieved at WOT was lowered by 52Nm because of the flexibility of fully opening the VGT at low boost pressure conditions. By varying the VGT actuator position, the operating range that can be controlled was between 184Nm and 308Nm, 93Nm larger than that can be controlled using the waste-gate on the FGT turbocharger.
The VGT turbocharger experimental data was compared with simulation data collected from a calibrated 1-D engine model with FGT turbocharger. At 2000rpm 229Nm, compared with the FGT turbocharger, the lower pumping work resulted in 1.5% BSFC reduction and the extended spark timing window resulted in another 1.4% fuel consumption improvement.

Order

Conference proceedings and magazines are sent by post contrary to the PDF files, which can be downloaded as soon as the payment is completed.
They can't be ordered in the same shopping cart.

Select your fee

INGENIEURS DE L'AUTO SE DIGITALISE

 

 

La revue Ingénieurs de l’Auto est maintenant diffusée en print et on line. Une grande première pour la SIA avec ce numéro 865, disponible au format numérique.

Cette version digitale sera, à chaque numéro, réservée aux membres de la SIA abonnés.

Exceptionnellement pour ce premier numéro on line, et en lien avec la situation de confinement et de télétravail de beaucoup d’ingénieurs de notre industrie, la version digitale du numéro de Mai est accessible à tous.

 

DÉCOUVRIR LA REVUE