Energy conserving engine

An Otto cycle engine utilizing fossil fuels, having a coolant waterjacket surrounding a plurality of internal combustion cylinders having exhaust ports and containing reciprocally moving pistons connected to a crankshaft, which comprises:

• a reservoir storing liquid at ambient temperature;
• a counterflow heat exchanger having at least one conduit located centrally in a tank, the conduit in fluid communication with said exhaust port of one of said cylinders of said engine, the tank containing liquid in conductive heat transfer contact with the conduit, the tank being in fluid communication with said reservoir, the tank adapted to flow fluid in a direction opposite to the fluid flow in the centrally located conduit;
• temperature sensing means in the tank of said counterflow heat exchanger, monitoring the temperature of the fluid in the tank;
• pressure sensing means in the tank of said counterflow heat exchanger, monitoring the pressure in the tank;
• a first valve means in fluid communication with the tank adapted to vary the flow rate of fluid in the tank;
• a second counterflow heat exchanger having a conduit located centrally in a tank, said conduit in fluid communication with at least one of said plurality of cylinders of said engine, and said tank containing fluid in conductive heat transfer contact with said conduit, said tank in fluid communication with said reservoir.
• temperature sensing means in the tank of said second counterflow heat exchanger, monitoring the temperature of fluid in said tank;
• pressure sensing means in the tank of said second counterflow heat exchanger, monitoring the pressure in the tank;
• a second valve means in communication with the tank in said heat exchanger, adapted to adjust flow rate of fluid in the tank;
• a third valve means in communication with the tank of said first counterflow heat exchanger, adapted to initiate and terminate the flow of superheated water from said first counterflow heat exchanger tank, to said engine;
• injector means in at least one of said cylinders of said engine, adapted to inject superheated water from said third valve means into said cylinder;
• a fourth valve means in communication with said second counterflow heat exchanger, adapted to vary the flow of water from said second counterflow heat exchanger to said waterjacket of said engine for maintaining operating temperature of said engine;
• a third counterflow heat exchanger having a conduit located centrally in a tank, in fluid communication with said second counterflow heat exchanger conduit, and in communication with the tank of said second counterflow heat exchanger at one end, the tank being in fluid communication with said reservoir at the opposite end, the tank containing fluid in conductive heat transfer contact with the conduit;
• controller means connected to said four valve means, said temperature sensor means and to said pressure sensor means for computing the flows of counterflow fluids in said tanks and said injector means to obtain steam operating mode temperatures;
• whereby the superheated water temperature and pressure conditions in the plurality of counterflow heat exchangers is used to compute the amount of flow through the valves for producing superheated water for injection into the cylinders to initiate steam mode operation from fossil fuel mode and return, whenever the proper temperature and pressure conditions exist for mode conversion.