The Effects of Coolant Temperature on the Performance and Emissions of a Single-Cylinder Divided-Chamber Diesel Engine 841053
Comparative experiments were performed on an experimental divided-chamber diesel engine for three coolant conditions: baseline (water at 82°C), high coolant temperature (glycol at 120°C) and a differential cooling condition where the antechamber was kept cold (water at 20°C) and the main chamber was kept hot (glycol at 120°C). High-temperature cooling was found to provide a significant brake-specific-fuel-consumption advantage at low-speed and low-load conditions and at very retarded combustion-timing conditions. In general, high coolant temperature caused an increase in hydrocarbon (HC) emissions. Lowering the antechamber surface temperature at the low-speed conditions was found to cause an increase in gaseous emissions and a reduction in smoke and particulate emissions.
Citation: Alkidas, A. and Cole, R., "The Effects of Coolant Temperature on the Performance and Emissions of a Single-Cylinder Divided-Chamber Diesel Engine," SAE Technical Paper 841053, 1984, https://doi.org/10.4271/841053. Download Citation
A. C. Alkidas, R. M. Cole
Engine Research Department, General Motors Research Laboratories
1984 SAE International Off-Highway and Powerplant Congress and Exposition
Diesel Engine Combustion and Emissions-SP-0581, SAE 1984 Transactions-V93-84