1998-04-08

Investigation on a Computer Controlled Sequential Turbocharging System for Medium Speed Diesel Engines 981480

An investigation on the sequential turbocharging (ST) of a Kelvin TFSC6 medium speed diesel engine developing 320 kW at 1200 r/min is reported in this paper. The sequential turbocharging (ST) system, utilising turbochargers of unequal size, resulted in significant improvement when compared with previously designed systems. The engine test results show that the new ST system improves the engine performance at both high and low speeds except, at or near to, the ‘transfer’ speed. The engine low speed performance is improved with fuel saving of up to 7 g/kwh for the 1st sequence. However, the improvement of the high engine speed performance at the 2nd sequence was limited by some boost air leakage from a flexible connecting pipe from the peak unit compressor outlet to the intercooler inlet. An optimised sequence transfer control mode is also proposed in this research. Two control valves designed for this ST system, one at the peak unit turbine inlet and the other at the compressor outlet, work very well during the engine test period

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.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Evaluation of Hybrid Electric Turbocharging for Medium Speed Engines

2019-24-0188

View Details

JOURNAL ARTICLE

Experimental Investigation and 1D Simulation of a Turbocharger Compressor Close to Surge Operation

2015-01-1720

View Details

TECHNICAL PAPER

Experimental Characterization and Modelling of a Turbocharger Gasoline Engine Compressor By-Pass Valve in Transient Operation

2015-24-2524

View Details

X