Stoichiometric High-Temperature Direct-Injection Compression-Ignition Engine

A neat-fuel direct-injected compression ignition engine, comprising:

• a. an engine combustion chamber, wherein said engine combustion chamber comprises a thermal barrier coating on surfaces of said engine combustion chamber, wherein said engine combustion chamber surfaces comprise a piston surface, valve surfaces, and head surface;
• b. a direct injection port, wherein said direct injection port is disposed to inject a neat fuel, wherein said neat fuel comprises a neat fuel quantity that satisfies a stoichiometric condition with respect to an intake air quantity to said engine combustion chamber;
• c. a mechanical exhaust regenerator, wherein said mechanical exhaust regenerator comprises turbine expansion stages disposed to transfer energy from an exhaust gas stage to an intake compression stage;
• d. an exhaust gas O2 sensor, wherein exhaust O2 sensor data is input to an active feedback control, wherein said active feedback control is disposed to deliver quantified fuel amounts;
• e. a variable valve actuation (VVA) system, wherein said VVA system controls a position of an intake valve and a position of an exhaust valve;
• f. an exhaust gas temperature sensor, wherein said exhaust gas temperature sensor is disposed to provide active feedback control of exhaust gas, wherein said exhaust gas is regulated by closing said exhaust valve early with respect to piston position according to said VVA system, or wherein said exhaust gas is recirculated external to said combustion cylinder with an exhaust gas recirculation (EGR) system, wherein said EGR system comprises a mass flow controller, heat exchanger, and flow path, wherein said flow path connects to an air intake of said engine combustion chamber;
• g. a load command input, wherein said load command input is according to a position of a gas pedal;
• and
• h. an appropriately programmed computer, wherein said appropriately programmed computer receives measurement signals from said exhaust temperature sensor and said exhaust O2 sensor, wherein said appropriately programmed computer operates said EGR system to input said exhaust gas to said engine combustion chamber according to said measurement signals from said exhaust temperature sensor, wherein said appropriately programmed computer changes an opening timing and a closing timing of said VVA system according to said measurement signals from said exhaust temperature sensor, wherein said engine load control is implemented by an quantity of said exhaust gas within said engine combustion chamber, wherein said appropriately programmed computer operates a fuel injector to deliver said stoichiometric amount of neat fuel with respect to said amount of intake air that is independent of said quantity of said exhaust gas present within said combustion chamber according to said measurement signals from said exhaust O2 sensor.