Overdrive Magazine | Trucking Business News & Owner Operator Info
Issue link: https://read.dmtmag.com/i/101364
Plus, hauling tankers, I rely on the extra power a 15-liter puts out to get my work done. So it���s really a no-brainer for me.��� Says Rumsey, ���It���s easy to see how important that better drivability and better performance are with largerdisplacement engines, especially in the hands of an expert driver who can make the engines deliver exceptional fuel economy,��� she says, adding that the driver can have a 30 percent mpg impact. Each engine also should be optimized for the specific intended duty cycle. While larger-displacement engines can allow for greater gross power output, they cost more because of their added mass. ���Machining costs and design expenses can be greater [producing] engines in the 500-horsepower-and-up category,��� McKenna says. ���While we���ve made some strong inroads with customers and convinced them that their needs can be met by a 13-liter engine, there���s still a legitimate need and demand for 15-liter power ��� especially with higher-horsepower users,��� Gilligan says. That���s one reason Navistar is relaunching the Cummins ISX15 in its ProStar+, with plans to offer the engine soon in both its 9900 and PayStar tractors. arena with their smaller siblings. Bore and stroke optimization, valve size and turbo efficiency are all components of optimizing fuel economy. ���At the same time, horsepower and torque offerings typically increase with engine displacement because the We���ve Got Your Back. �� Guaranteed Accurate Weights At CAT Scale, we stand behind our weights. Period. The next time you need to weigh, look for the black and gold sign and get weights you can trust. ��� CAT Scale���s always been there when I needed them. I got a big ticket in Maryland ��� $16,371! CAT Scale had my back. They represented me in court, and I didn���t have to pay a thing. When in doubt, ��� scale out on a CAT. ��� George Alma, Georgia Text INFO to 205-289-3555 or visit www.ovdinfo.com Making the right choice When considering a change in engine displacement, it���s wise to review your current engine���s operational history, McKenna says. The ECM is a good place to start: Its data tells a lot about how the engine is performing relative to the work required and if there���s too much or not enough power on hand. ���It can tell you if there���s extremely high demand for power at very low vehicle speeds,��� McKenna says, likewise the converse. Despite the 13-liter���s reputation for fuel economy, Rumsey is adamant that modern larger-displacement engines can compete in the fuel economy mechanical limits of an engine are reached as power density increases,��� says Rumsey. ���A higher-displacement engine provides the flexibility for optimal gearing, allowing the engine to operate at lower engine speeds at cruise ��� which also translates into good fuel economy.��� Read more about The CAT Scale Guarantee at www.catscaleguarantee.com. 1-877-CAT-SCALE (228-7225) Like us on �� 2013 CAT Scale Company Facebook. January 2013 | Overdrive | 27