ABSTRACT Emissions of Unburned Hydrocarbons (UHC) from diesel engines are a
particular concern during the starting process, when after-treatment devices are typically …

Fuel wall impingement commonly occurs in small-bore diesel engines. Particularly during
engine starting, when wall temperatures are low, the evaporation rate of fuel film remaining …

Non-intrusive, crank-angle resolved measurements of piston temperature have been
performed in a single-cylinder direct-injection (DI) Diesel engine operating under highly …

In order to further improve the energy conversion efficiency in reciprocating engines,
detailed knowledge about the involved processes is required. One major loss source in …

The impact of fuel injection pressure on the development of diesel flames has been studied
in a light-duty optical engine. Planer laser-induced fluorescence imaging of fuel (fuel-PLIF) …

Partially premixed low-temperature combustion (LTC) using exhaust-gas recirculation (EGR)
has the potential to reduce engine-out NOₓ and soot emissions, but increased unburned …

Cycle resolved wall temperature measurements have been performed in a one cylinder port
injected optical Scania D12 truck engine run in HCCI mode. Point measurements at various …

As engine efficiency targets continue to rise, additional improvements must consider
reduction of heat transfer losses. The development of advanced heat transfer models and …

Post-injection strategies aimed at reducing engine-out emissions of unburned hydrocarbons
(UHC) were investigated in an optical heavy-duty diesel engine operating at a low-load, low …

The effect of fuel volatility on early direct-injection, low-temperature combustion (LTC) was
investigated using an optically accessible diesel engine. Five blends of conventional no. 2 …