Isuzu's New 12.0L Micro-Computer Controlled Turbocharged Diesel Engine

1984 ◽  
Author(s):  
Masayuki Wakabayashi ◽  
Seiji Sakata ◽  
Kozo Hamanaka
Keyword(s):  
Diesel Engine ◽  
Turbocharged Diesel Engine ◽  
Computer Controlled

A Comparison between Experimental and Analytical Transient Test Results for a Turbocharged Diesel Engine

1976 ◽  
Vol 190 (1) ◽  
pp. 267-276 ◽  
Author(s):  
D.E. Winterbone ◽  
R.S. Benson ◽  
G.D. Closs ◽  
A.G. Mortimer
Keyword(s):  
Steady State ◽  
Diesel Engine ◽  
Operating Conditions ◽  
Analogue Computer ◽  
Test Results ◽  
Test Bed ◽  
Turbocharged Diesel Engine ◽  
Computer Based ◽  
Computer Controlled ◽  
Good Agreement

SYNOPSIS A computer controlled diesel engine test-bed is described. The system is capable of excursions into regions of very low air-fuel ratio operation without damage to the engine; this enables the engine “steady-state” characteristics to be measured for off-design operating conditions. A computer-based data acquisition system was developed to acquire test-bed results under engine transient operating conditions. An analogue computer model of the engine was constructed using the steady-state characteristics of the engine as obtained from on- and off-design. This model operated in real-time and was suitable for both studies of engine control systems and the testing of control hardware. Results obtained from the test-bed and the model are compared. It is shown that good agreement can be achieved by minor modifications to the model based on steady state results.

Stabilizing Excessive EGR With an Oxidation Catalyst on a Modern Diesel Engine

2002 ◽  
Author(s):  
Ming Zheng ◽  
David K. Irick ◽  
Jeffrey Hodgson
Keyword(s):  
Diesel Engine ◽  
Oxidation Catalyst ◽  
Stable Operation ◽  
Exhaust Gas ◽  
Oxides Of Nitrogen ◽  
Engine Operation ◽  
Turbocharged Diesel Engine ◽  
New Approach ◽  
Cyclic Variations ◽  
Gas Recirculation

For diesel engines (CIDI) the excessive use of exhaust gas recirculation (EGR) can reduce in-cylinder oxides of nitrogen (NOx) generation dramatically, but engine operation can also approach zones with high instabilities, usually accompanied with high cycle-to-cycle variations and deteriorated emissions of total hydrocarbon (THC), carbon monoxide (CO), and soot. A new approach has been proposed and tested to eliminate the influences of recycled combustibles on such instabilities, by applying an oxidation catalyst in the high-pressure EGR loop of a turbocharged diesel engine. The testing was directed to identifying the thresholds of stable operation at high rates of EGR without causing cycle-to-cycle variations associated with untreated recycled combustibles. The elimination of recycled combustibles using the oxidation catalyst showed significant influences on stabilizing the cyclic variations, so that the EGR applicable limits are effectively extended. The attainability of low NOx emissions with the catalytically oxidized EGR is also evaluated.

Sign in / Sign up

Export Citation Format

Share Document