A stock LS1 turned race motor...
A stock LS1 turned race motor sits between the fender walls of the Spirit of Daytona's Pontiac G8 Koni Challenge race car. Race cars in that series use electronically controlled fuel-injected motors with great success.
The net effect of this approach yielded a combustion process that minimized total spark advance, optimized IMEP (indicated mean effective pressure) and helped reduce net BSFC (brake specific fuel consumption) for improved combustion efficiency. This design platform is an ideal approach to evaluating the changes planned for the engine component of this project. In short, the CT525 package provides a test bed that is sensitive to change, supportive of the theoretical bases for making such modifications and an excellent platform for the evaluation of alternative fuels and exhaust after-treatment.
It is the strong belief of the participants in this project that Circle Track's readership will be exposed to some rather startling test results, based on solid testing techniques and a broad range of engine evaluation experience.
In particular, we call your attention to the attached sidebar. It is authored by a comparatively young engineer who works at Argonne National Laboratory with Bob Larsen, an engineer and motorsports advocate introduced to CT's readership in the January issue on page 36 in "Back to the Future." A brief bio on Forrest Jehlik precedes his comments about the project which, by the way, are framed in a way to let you see the potentially wide-spread impact this project could have on both motorsports and the use of sustainable fuels and technologies. It has turned out beyond fortuitous that Bob Larsen encouraged and enabled Forrest to join the project's team. His penchant to detail and ability to gather, organize, and present ongoing data streams has become a critical ingredient in our collective efforts. Chances are you'll hear more from and about him as the project unfolds. In fact, you can count on it.
Finally, there's one last point we'd like to remake, and you may recall that Editor Rob Fisher previously shared this perspective. To whatever success the project may achieve, its core intent is to showcase ways by which motorsports can grow in the near- and long-term future. It is not intended to suggest replacements for existing automotive racing activities or technologies. Rather, if the winds of change are blowing (and they are), we want to demonstrate there are ways other approaches can presently coexist with known racing landscapes. If, over time, it becomes necessary for motorsports to become more flexible in response to environmental or economic requirements presently unforeseen, then Circle Track wants to have at least put forth a best-efforts attempt to stimulate some thought and dislodge any misconceptions or perspectives that might otherwise detract from necessary growth of the sport we love. Next month's installment will likely be an eye-opener for you.
A note from Jim McFarland: Forrest Jehlik is a research engineer from Argonne National Laboratory. His primary duties include involvement with a range of advanced technology vehicles, including plug-in hybrids, electric vehicles, and sustainable fuel powertrain technologies. In addition to leading portions of ANL's collegiate competitions developing advanced vehicle technologies, Forrest worked at GM's R&D/Powertrain where he led an engineering team to develop a proprietary combustion system that was included in the 4.5L Duramax engine. He capped his B.S. degree in Environmental Engineering (at the University of California-Riverside) with a M.S. at the University of Wisconsin-Madison while performing research in its Engine Research Center.