Abstract: A combined heat and power system for generating power using a hydrogen internal combustion engine and producing usable heat from the exhaust gases of the hydrogen internal combustion engine is described. The system includes a heat exchanger and reduction device, such as a catalytic converter. The heat exchanger may extract heat from the exhaust gases upstream of the catalytic converter and thereby control the heat of exhaust gases provided to the catalytic converter for reduction of exhaust gases. The catalytic converter may use hydrogen as a reducing agent, thereby using the same fuel source for powering the engine and reduction of the exhaust gases rather than separate working fluids. The heat exchanger and/or operating parameters of the system may be controlled to control a temperature of exhaust gases at the catalytic converter and thereby control efficiency of the conversion of exhaust gases.

Abstract: An internal combustion engine having a main combustion chamber, a prechamber, a first ignition plug and a second ignition plug. The main combustion chamber in fluid communication with the prechamber. The first ignition plug disposed in the prechamber for igniting a charge to form a flame jet directed into the main combustion chamber. The second ignition plug disposed in the main combustion chamber for igniting the charge in the main combustion chamber in the path of the flame jet from the prechamber. The second ignition plug configured to ignite the charge in the main combustion chamber prior to the ignition of the charge by the first ignition plug in the prechamber.

Abstract: A fuel control system for an engine is provided. The fuel control system includes a first sensor configured to generate a signal indicative of a pressure within a cylinder of the engine, a second sensor configured to generate a signal indicative of an amount of Nitrous Oxide (NOx), a fuel reformer, an Air Fuel Ratio (AFR) unit, and a controller. The controller is configured to receive the signals indicative of the pressure and the amount of NOx. The controller is configured to determine a Coefficient of Variation (COV) of Indicated Mean Effective Pressure (IMEP) and compare the COV of IMEP and the amount of NOx with a threshold combustion stability and a threshold amount of NOx respectively. The controller is further configured to regulate at least one of the fuel reformer and the AFR unit to control at least one of the combustion stability and the amount of NOx.

Abstract: An internal combustion engine has at least one combustion chamber and a piston slidably disposed within the at least one combustion chamber. The piston is configured to reciprocate between a top-dead-center position and a bottom-dead-center position. The internal combustion engine also has an air supply in selective fluid communication with the at least one combustion chamber and a fuel supply in selective fluid communication with the at least one combustion chamber. The internal combustion engine further has a supply of non-combustible gas and at least one injector in fluid communication with the at least one combustion chamber and the supply of non-combustible gas. The at least one injector is configured to inject non-combustible gas from the supply into the at least one combustion chamber.