Steve Charlton, longtime VP and chief technical officer for the Engine Business division at Cummins, plans to retire effective July 1 and will be replaced by Jennifer Rumsey, who will become VP-engineering of the company’s Engine Business.

Charlton joined Cummins in 1993 as the director of advanced engineering, working on the early plans for the V-8 light-duty diesel engine. He became executive director of research in 1999, then stepped up to executive director-advanced engineering in 2001 before being appointed technical leader in charge of getting Cummins’ truck engines to meet the 2007 emissions standards established by the Environmental Protection Agency (EPA)

Promoted to VP-heavy duty engineering in 2008, Charlton went on to become VP and CTO for the Engine Business in 2010.

Prior to joining Cummins, Charlton worked as an engineer at the General Electric Co. in the United Kingdom and also taught engineering at Staffordshire University and the University of Bath.

In 2005, Charlton was elected a fellow by the Society of Automotive Engineers (SAE) and for the Institute of Mechanical Engineers in London in 2009.

Jennifer Rumsey (at right), Charlton’s successor, joined Cummins in 2000 and has played key roles on a number of significant projects and initiatives for the company’s light, medium, and heavy duty engine products.

That includes stints as quality leader for Cummins Turbo Technologies and helping develop Tier 4 technologies and exhaust aftertreatment controls.

Rumsey received a bachelor of science in mechanical engineering with highest honors from Purdue University in 1996 and a master of science in mechanical engineering from the Massachusetts Institute of Technology in 1998.