I've got an idea for a high performance Diesel, and I'd like to know if you guys think it's feasible, as me and my friend are mulling it over (be patient with me, I know I may not be explaining this properly). We plan to build a 24 cylinder engine, where the bore:stroke ratio is 5":4". The structure will be opposed-piston. Instead of a crankshaft, the piston rod will have a magnet attached to a spring (fully-extended length of 4") that is attached to the bottom end. The cylinder will be a solenoid. There will be 2.71 cubic inches separating the pistons from each other when both are at TDC, which will allow for a 30:1 CR. The reciprocating motion of the pistons will be translated into electricity via the magnet oscillating inside the cylinder. The AC electricity will be rectified into DC, and stored in a battery, which will power electric motors on each wheel, as well as other necessary electronics. The lower reciprocating mass will also allow for higher RPMs (well, not really revolutions...). The valves will be electronically-actuated, since there's no crankshaft to do valve timing, which will also allow for a square valve timing profile. The engine will have six strokes: First stroke: air intake Second stroke: compression Third stroke: fuel injection Fourth stroke: exhaust of combustion products Fifth stroke: injection of demineralized water Sixth stroke: exhaust of steam The injection of demineralized water will cool the engine via evaporative cooling, rejecting heat to the exhaust, which will also exert a force on the pistons, for an extra power stroke. So this engine will produce power once every three revolutions. Also, the steam will dilute the emissions, which will reduce or eliminate the need for an SCR system, and also decrease brake specific fuel consumption. The engine will need to use steam cylinder oil, as that will resist the washing action of the steam. The engine will be fitted with a variable geometry turbocharger, particulate filter, and a selective catalytic reduction system. The engine block will have an ammonia refrigeration circuit, which will be controlled by the exhaust gas temperature. If the exhaust gas temperature rises above 900C, the refrigeration circuit will turn on, and stay on until it falls below 900C. By using electric motors to drive the wheels, the efficiency will be improved, and it will have a smooth torque curve, which eliminates the need for a transmission, reducing weight, and regenerative braking can be done. What do you think?