Powering 2012

After years of emissions hurdles and technology evolutions the current 2010 compliant engines deliver better fuel economy, will likely last longer, and, in some cases, offer longer oil change intervals than past engines. The following is a quick guide to what is being offered today from the major engine manufacturers in the Class 8 market.

Cummins

Cummins’ ISX15 was introduced in 1998. Design of its block was optimized through new electronic tools to minimize noise and weight. The engine also had an integrated engine brake.

The cylinder liners got an improved hardening process in 2002 because exhaust gas recirculation can cause corrosion of the wear surface. Also, the piston pin was supplied with lube oil under pressure to allow the piston to carry the additional cylinder pressure of EGR. The harder liners actually extended life. Other features include a combination full-flow and bypass oil filter from Cummins Filtration.

ISX15

horsepower: 400-600