The piston motion of HFPE (hydraulic free-piston engine) was determined by the forces acting on the mover rather than on the crankshaft. This makes the complex interaction coupling between the piston motions and the combustion process. These factors lead to the combustion in the HFPE unstable...

In order to solve the problems associated with rapid combustion process under high engine speeds, benzyl azides were chosen as a fuel additive blended with diesel fuel. The physical and chemical properties of the fuel blends were analyzed. A single-cylinder engine was built and the in-cylinder...