BARCELONA, Spain- Caterham have parted company with technical director Mark Smith and replaced him with a committee. Caterham, who have struggled to make any impression in 2014 and are last in the standings after four races, said in a statement that Smith had left with immediate effect. Caterham said: "A new technical committee has been formed to oversee all technical and operational aspects of the team's activities on and off track. "TECH COMMITTEEJohn Iley, Jody Egginton and Gerry Hughes will now each take responsibility for specific areas of the team's operational activities." Smith joined Caterham, a team that has yet to score a point in F1, in 2011 and took over the technical department from Mike Gascoyne in 2012. F1 underwent huge technical changes over the European winter, with a new V6 turbo hybrid power unit replacing the old V8s and revised aerodynamic regulations. Smith and his design department were under added pressure to deliver results with team owner Tony Fernandes saying before the season started that he could walk away from the sport unless Caterham showed significant improvement.Fernandes said: "If we are at the back, I don't think we're going to carry on." The big step has not happened, with the team's engine provider Renault also suffering teething problems with their power unit that limited running in pre-season testing. Caterham's drivers are experienced Kamui Kobayashi and rookie Marcus Ericsson.