Making Diesel Engines Burn Gasoline
09-27-2010, 01:50 PM
#1
Making Diesel Engines Burn Gasoline
One of the cool things about working at Argonne National Laboratory is exploring new ideas. I’ve worked on a lot of combustion technologies, including hydrogen, but right now I’m doing something really unusual — burning gasoline in a diesel engine.
The first question you’re probably asking is, “Why in the world do you want to do that?” Well, I got the idea after talking to some colleagues who have been working on similar concepts.
We’re working on a combustion system that’s not traditional diesel combustion but not spark-ignition combustion either. Most researchers call this approach low temperature combustion, or LTC. Several types have been explored, such as HCCI (homogeneous charge compression ignition), M-K (modulated kinetics or smokeless rich) and UNIBUS (uniform bulky stratified) combustion.
Why, you ask, would we explore this alphabet soup of technologies when when traditional diesel and spark ignition have served us well for more than a century? Because traditional diesel combustion spews a lot of particulate matter and oxides of nitrogen (NOx). And spark-ignition gasoline combustion has a significant efficiency problem due to the throttle, which is needed to control power output. Because of the nature of these two systems, there’s really no significant improvement that can be achieved with either one.
Read More http://www.wired.com/autopia/2010/09...#ixzz10l113lXR
The first question you’re probably asking is, “Why in the world do you want to do that?” Well, I got the idea after talking to some colleagues who have been working on similar concepts.
We’re working on a combustion system that’s not traditional diesel combustion but not spark-ignition combustion either. Most researchers call this approach low temperature combustion, or LTC. Several types have been explored, such as HCCI (homogeneous charge compression ignition), M-K (modulated kinetics or smokeless rich) and UNIBUS (uniform bulky stratified) combustion.
Why, you ask, would we explore this alphabet soup of technologies when when traditional diesel and spark ignition have served us well for more than a century? Because traditional diesel combustion spews a lot of particulate matter and oxides of nitrogen (NOx). And spark-ignition gasoline combustion has a significant efficiency problem due to the throttle, which is needed to control power output. Because of the nature of these two systems, there’s really no significant improvement that can be achieved with either one.
Read More http://www.wired.com/autopia/2010/09...#ixzz10l113lXR
09-27-2010, 03:19 PM
#3
Administrator
interresting. HCCI is interesting tech. i suspected it would be seen in production engines by now.
the new sky-d from mazda is lower than normal diesel compression so might fit in the LTC mold they talk about
the new sky-d from mazda is lower than normal diesel compression so might fit in the LTC mold they talk about
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