Journal
ENERGY & FUELS
Volume 29, Issue 10, Pages 6793-6803Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.energyfuels.5b01439
Keywords
-
Categories
Funding
- Volvo Group
- U.S. Department of Energy under DOE Award [DE-EE0004232]
- Volvo Group Truck Technology through the SuperTruck-Volvo Energy Efficient Vehicle Program
Ask authors/readers for more resources
The effects of the atmospheric oxygen concentration on the physical and chemical ignition behavior of biodiesel and diesel fuel blends were investigated using an optically accessible constant-volume combustion chamber (600 degrees C and 20 bar) equipped with a light-duty diesel injector. High-speed imaging was used to measure the transient cone angle and penetration length of the liquid spray jet as it developed within the chamber. Structural fluctuations of the developing spray jets were suggested to be a function of injector pin movement, with their frequency and amplitude being functions of the fuel viscosity and density. Physical and chemical ignition delay was analyzed through detection of excited formaldehyde and hydroxide chemiluminescence using a system of optical filters and photomultiplier tubes. Although biodiesel produced slightly longer physical ignition delays as a result of an extended atomization and evaporation process, its chemical ignition delay was much shorter than that of diesel, which is attributed to the long-chain hydrocarbon fuel structure and fuel oxygen availability. From an engine control and performance standpoint, the short ignition delay and robust heat release profile of biodiesel produced under simulated low-temperature combustion operating conditions demonstrates the compatibility of biodiesel for use in next-generation compression ignition engines.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available