Internal Combustion Tech Marches On

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The two-stroke motorcycle has long been replaced by the four-stroke.  Now, Ilmore Engineering appears to have come up with a five-stroke engine.  Ilmore does a lot of stuff in Indy Car, Formula 1, and MotoGP, so they aren’t some fly-by-night firm with a wild idea.

Although, it is a wild idea.

With dual camshafts and an asymetrical three-cylinder configuration, the Ilmor is more than intriguing with its design, and promises to bring real benefits both to the race track, and to road-use. Most notably is a 10% increased fuel efficiency, and 20% weight reduction in power-plant weight.

With its 700cc, turbocharged, prototype motor, Ilmor is able to extract 130hp and 122 lbs•ft of torque. To achieve this, the motor employs two overhead camshafts. One is a “high pressure” camshaft, which turns at half the crank speed, while the other shaft is a “low pressure” camshaft, which turns at the same speed as the crankshaft.

Yes, you read that right.  A 700cc motor with 130HP and 122lb-ft of torque.  Those are…interesting numbers.  That’s what I call a real “Speed Triple”.  You’d need to put a second mortgage on your house to pay off your tire bill, assuming you don’t just wheelie right over and turn turtle, killing yourself.

But, assuming those difficulties can be overcome, it sounds like a neat idea.

Author: Dale Franks

Dale Franks is the former host of The Business Day, ”a daily, four-hour business and financial news program on KMNY Radio in Los Angeles. From 2002-2004, he was a contributor on military and international affairs for TechCentralStation.com. Currently, he a publisher and editor of the monthly political journal The New Libertarian, as well as an editor of the popular web log, Q and O. Dale served as a military police officer in the United States Air Force from 1984 to 1993, in variety of assignments both in the United States and Europe, where he also was assigned to the staff of the Headquarters of Allied Forces Central Europe. In addition to broadcasting, writing, and speaking on various topics, Dale has also been a long-time technical training instructor on a variety of computer software and technology subjects. Dale has also long been involved with information technology as an accomplished web designer, programmer, and technologist, serving as the corporate knowledge specialist for Microsoft Outlook at SAIC, the nation's largest employee-owned corporation. Additionally, he is the author of a number of software user guides used for classroom training by one of Southern California’'s premier computer training and consulting firms. His book, SLACKERNOMICS: Basic Economics for People Who Find Economics Boring, is available from Barnes & Noble.