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Digital Subscriptions > Diesel World > July 2019 > COMMON-RAIL VS. MECHANICAL

COMMON-RAIL VS. MECHANICAL

INTELLIGENT ENGINEERING TAKES ON BRUTE FORCE.

DIESEL WORLD MAGAZINE

You would think in the last 10 years that the battle between common-rail-fueled engines and mechanically motivated ones would have cooled down. But, if anything, the rivalry has intensified. In the past, P-pump Cummins engines dominated the sled-pulling and drag racing worlds, but things have started to change.

Dynoing trucks, the measure of absolute horsepower, have become more and more popular; and, again, this is an area that would become a battleground.

Of course, there are thousands of 700-plus-hp street trucks roaming the country, and those can’t be discounted either. Yeah, 700 hp is old news, mechanically speaking, but can common-rails do it better? We’re here to find out.

SLED-PULLING MECHANICAL: 1, COMMON RAIL: 0

We’ll start out with an obvious one: Common-rails led a sled-pulling charge about five years ago that hasn’t yet let up. Fully half of the top 10 finishers at most events (circa 2012) were common-rail trucks. A number of years ago, CRs (common-rails) were hard hitting on the sled-pulling circuit— thanks to advances in wild CP3 stroker pumps and 500 to 800 percent-over injectors.

Common-rail injection has come a long way in the past few years. Now, stand-alone computer systems and two or even three high-pressure pumps (such as this Industrial Injection triple fueler) are commonplace.
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About Diesel World

Diesel World July 2019, Look Inside : The New 2020 Silverado, How to build your own Power Stroke, Common Rail vs. Mechanical Injection, And More....