7 results about "Fuel control unit" patented technology

A dual fuel system includes a fuel injector having a fuel pressurization plunger, and a fueling control unit structured to determine a fuel bulk modulus term based upon a volume change value (dV) and a pressure change value (dP) for a fuel pressurized in the fuel injector. The fueling control unit is further structured to determine fuel injector control commands by way of map lookups on fueling maps selected on the basis of the fuel bulk modulus term. Related apparatus and methodology are also disclosed.

A propulsion system (20) includes a propulsor (26), an engine (22), an electrical assembly (24), and an emergency energy protection assembly. The engine (22) includes a fuel system (38). The fuel system (38) includes a fuel control unit. The electrical assembly (24) includes a battery (66), a motor control unit (64), an electric motor (62), and an electrical distribution system (68). The electrical distribution system (68) includes at least one contactor electrically connected between the battery (66) and the motor control unit (64). The at least one contactor is switchable between a closed state and an open state. The engine (22) and the electric motor (62) are coupled with the propulsor (26). The emergency energy protection assembly includes an emergency actuator. The emergency actuator is actuable in an actuated state to control the at least one contactor to switch to the open state, control the motor control unit (64) to deenergize the electric motor (62), and control the fuel control unit to stop fuel flow for the engine (22).

A propulsion system includes a propulsor, an engine, an electrical assembly, a controller, and an uncontrollable high thrust (UHT) protection assembly. The engine includes a fuel system. The engine is coupled with the propulsor. The fuel system includes a fuel control unit. The electrical assembly includes an electric motor and a motor control unit. The electric motor is coupled with the propulsor. The motor control unit is electrically connected with the electric motor. The controller includes a first controller channel. operable to control the fuel control unit to direct fuel to the combustor and to control the motor control unit to direct electrical power to the electric motor. The UHT protection assembly includes a first protection circuit operable to identify a presence or an absence of a UHT condition of the propulsor and, in response, generate a shutdown signal for the fuel control unit and the motor control unit.

A dual fuel system (22) includes a fuel injector (24) having a fuel pressurization plunger (28), and a fueling control unit (54) structured to determine a fuel bulk modulus term based upon a volume change value (dV) and a pressure change value (dP) for a fuel pressurized in the fuel injector. The fueling control unit is further structured to determine fuel injector control commands by way of map lookups on fueling maps selected on the basis of the fuel bulk modulus term.

A dual fuel system includes a fuel injector having a fuel pressurization plunger, and a fueling control unit structured to determine a fuel bulk modulus term based upon a volume change value (dV) and a pressure change value (dP) for a fuel pressurized in the fuel injector. The fueling control unit is further structured to determine fuel injector control commands by way of map lookups on fueling maps selected on the basis of the fuel bulk modulus term. Related apparatus and methodology are also disclosed.

A propulsion system includes a propulsor, an engine, an electrical assembly, and an emergency energy protection assembly. The engine includes a fuel system. The fuel system includes a fuel control unit. The electrical assembly includes a battery, a motor control unit, an electric motor, and an electrical distribution system. The electrical distribution system includes at least one contactor electrically connected between the battery and the motor control unit. The at least one contactor is switchable between a closed state and an open state. The engine and the electric motor are coupled with the propulsor. The emergency energy protection assembly includes an emergency actuator. The emergency actuator is actuable in an actuated state to control the at least one contactor to switch to the open state, control the motor control unit to deenergize the electric motor, and control the fuel control unit to stop fuel flow for the engine.

Systems and procedures for controlling the fuel supplied to the cylinders of an internal combustion engine are described. In one example, the fuel is controlled in response to an output from two different fuel control units on an external circuit. The fuel can be controlled according to the individual, separate outputs of the external circuit's control units or the combined outputs of the two different fuel control units.