This paper develops a gain scheduled control to move a diesel engine through a driving profile represented as a set of 6 operating points in the state space of a 7^th order nonlinear state model. The calculations for the control design are based on a 3^rd order(reduced) model of the Diesel engine on which state space are projected the 6 operating points. About each operating point, a 3^rd order nonlinear error model of the Diesel engine is generated. Using the error model for each operating point, a linear feedback control is computed as a solution to a set of LMIs. The solution of each system of LMIs produces a norm bounded controller guaranteeing that the state of the diesel engine is driven from one operating point to the next one in the sequence. The gain scheduled controller performance is evaluated on the 7^th order model.