Reducing emissions of carbonyl compounds and regulated harmful matters from a heavy-duty diesel engine fueled with paraffinic/biodiesel blends at one low load steady-state condition

A system for coinjecting mixtures of diesel fuel and water into a heavy-duty diesel engine has been developed and evaluated at the Southwest Research Institute. This system features prototype Lucas electronically controlled injectors, full electronic control, and can vary the percentage of water in the mixture on a cycle-resolved basis. Tests of this system were conducted on a production Volvo D-12 engine, and have produced reduced NOx and smoke emissions over steady-state and transient conditions. Water-diesel coinjection yielded a considerable improvement in NOx-smoke and NOx-BSFC trade-offs under steady-state engine operation. In addition, control of the water percentage on a cycle-resolved basis was shown to be an effective method for mitigating NOx and smoke emissions over step-load transients. Results from this work show that a combination of aggressive EGR and diesel+water coinjection is very promising for producing very low levels of engine-out exhaust emissions, reducing the water storage requirements, and improving fuel efficiency. Further refinement of this injection technology is in progress.

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Variability of Heavy-Duty Diesel Engine Emissions for Transient and 13-Mode Steady-State Test Methods

10.4271/840346 ◽

1984 ◽

Cited By ~ 4

Author(s):

N.J. Barsic

Keyword(s):

Steady State ◽

Diesel Engine ◽

Test Methods ◽

Heavy Duty ◽

Engine Emissions ◽

Diesel Engine Emissions ◽

State Test ◽

Heavy Duty Diesel Engine ◽

Heavy Duty Diesel ◽

Steady State Test

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Cycle-Controlled Water Injection for Steady-State and Transient Emissions Reduction From a Heavy-Duty Diesel Engine

ASME 2004 Internal Combustion Engine Division Fall Technical Conference ◽

10.1115/icef2004-0825 ◽

2004 ◽

Cited By ~ 1

Author(s):

Rudolf H. Stanglmaier ◽

Philip J. Dingle ◽

Daniel W. Stewart

Keyword(s):

Steady State ◽

Diesel Engine ◽

Fuel Efficiency ◽

Water Injection ◽

Heavy Duty ◽

Engine Operation ◽

Southwest Research Institute ◽

Trade Offs ◽

Heavy Duty Diesel Engine ◽

Heavy Duty Diesel

A system for co-injecting mixtures of diesel fuel and water into a heavy-duty diesel engine has been developed and evaluated at the Southwest Research Institute. This system features prototype Lucas EUI injectors, full electronic control, and can vary the percentage of water in the mixture on a cycle-resolved basis. Tests of this system were conducted on a production Volvo D-12 engine, and have produced very encouraging results. Water-diesel co-injection yielded a considerable improvement in NOx-smoke and NOx-BSFC trade-offs under steady-state engine operation. In addition, control of the water percentage on a cycle-resolved basis was shown to be an effective method for mitigating NOx and smoke emissions over step-load transients. Results from this work show that a combination of aggressive EGR and diesel+water co-injection is very promising for producing very low levels of engine-out exhaust emissions, reducing the water storage requirements, and improving fuel efficiency. Further refinement of this injection technology is in progress.

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