Hydroxy gas enriched diesel fuel investigations on homogenous charge compression ignition engine with change in injector opening pressure

Abstract

Experiments were performed on a diesel engine with varying injector opening pressure (IOP) and fuel injection timing of 45° before top dead center. Hydroxy gas was mixed with incoming air at a constant flow rate of 200 ml/min. An increase in IOP improved brake power and brake thermal efficiency (BTE) by 8.42% and 7.03%, respectively. The addition of hydroxy gas improved brake-specific fuel consumption, brake power, and BTE was 7.10%, 3.2%, and 11.48%, respectively with increment in IOP. Carbon monoxide, hydro carbons, and smoke were reduced by 29.24%, 19.84%, and 32.27%, respectively due to hydroxy gas addition at elevated IOP.

Keywords:

• early direct injection
• emissions
• HCCI engine
• hydroxy gas
• injector opening pressure

Data availability statement

Complete experimental data is available with corresponding author and can be made available on request.

Funding statement

No funds were received for execution of this research work.

Disclosure statement

The authors declare that they have no conflict of interest.