A variable output fuel pump includes a BLDC motor and a control module to supply three power phases A, B and C to the motor, wherein the control module connects to a power supply connection of a vehicle, and to a vehicle communications network such as a CANbus to control operation of the BLDC motor. The motor is driven by a motor driver that is connected to a micro-controller and in turn, the micro-controller is connected to a communications or CANbus I/F module. In this manner, the micro-controller can be operated by the vehicle control system such as an engine control unit (ECU) through a connection with the vehicle CANbus or other vehicle communications network. The motor driver also detects characteristics of the power used in the three power phases of the motor so that the system is operated with or without motor sensors located within the motor. By connection to the vehicle CANbus or other vehicle communications network, the vehicle ECU can be used to remotely control the fuel pump motor speed and other operational parameters of the motor to thereby provide a variable operate fuel pump.

A method of implementing control logic of a compression ignition engine is provided. The engine includes an injector, a variable valve operating mechanism, an ignition plug, at least one sensor, and a processor. The processor outputs the signal to the ignition plug in a specific operating state so that unburnt mixture gas combusts by self ignition after the ignition plug ignites the mixture gas inside a combustion chamber. The method includes determining a geometric compression ratio of the engine, and determining control logic defining a valve opening angle CA of an intake valve. The valve opening angle CA (deg) is determined so that the following expression is satisfied, if the geometric compression ratio is <14, 40+800+DCA60550+D,. Here, D is a correction term according to the engine speed NE (rpm), D=3.310.sup.10NE.sup.31.010.sup.6NE.sup.2+7.010.sup.4NE.

A method of implementing control logic of a compression ignition engine is provided. The engine includes an injector, a variable valve operating mechanism, an ignition plug, at least one sensor, and a processor. The processor outputs the signal to the ignition plug in a specific operating state so that unburnt mixture gas combusts by self ignition after the ignition plug ignites the mixture gas inside a combustion chamber. The method includes determining a geometric compression ratio of the engine, and determining control logic defining a valve opening angle CA of an intake valve. The valve opening angle CA (deg) is determined so that the following expression is satisfied, if the geometric compression ratio is <14, 40+800+DCA60550+D,. Here, D is a correction term according to the engine speed NE (rpm), D=3.310.sup.10NE.sup.31.010.sup.6NE.sup.2+7.010.sup.4NE.

Methods and systems are provided for starting an engine via an electric turbocharger. In one example, a method for starting the engine via the electric turbocharger may include flowing compressed air from the electric turbocharger to cylinders of the engine to crank a crankshaft of the engine without a starter motor. The method may include adjusting an opening amount of electrically or pneumatically actuated intake valves and exhaust valves to reduce a force to crank the crankshaft.

An internal combustion engine includes a fuel injection system including a fuel injector disposed to inject fuel into the combustion chamber, and a plasma ignition system including a groundless barrier discharge plasma igniter that protrudes into the combustion chamber. A controller includes an executable instruction set to control the engine in a compression-ignition mode when the output torque request indicates a low load condition, including instructions to control a variable valve actuation system and control the plasma ignition system to execute plasma discharge events subsequent to controlling the fuel injection system to execute a fuel injection event, wherein the fuel injection event achieves a cylinder charge having a lean air/fuel ratio.

Methods and systems are provided for determining condition of an air filter coupled to an intake passage of an engine system. In one example, a method may include estimating a resistance of the air filter based on a manifold air charge value. The manifold air charge value may be either a mass air flow or a manifold air pressure.

Methods and systems are provided for determining condition of an air filter coupled to an intake passage of an engine system. In one example, a method may include estimating a resistance of the air filter based on a manifold air charge value. The manifold air charge value may be either a mass air flow or a manifold air pressure.

Methods and systems are provided for operating a driveline of a hybrid vehicle that includes an internal combustion engine, an electric machine, and a transmission are described. In one example, values of an engine spark to engine torque relationship are adjusted to improve engine torque control. The engine is subsequently operated responsive to adjusted values of the engine spark to engine torque relationship.

Methods and systems are provided for operating a driveline of a hybrid vehicle that includes an internal combustion engine, an electric machine, and a transmission are described. In one example, values of an engine spark to engine torque relationship are adjusted to improve engine torque control. The engine is subsequently operated responsive to adjusted values of the engine spark to engine torque relationship.

An object of the present invention is to provide a working machine and a working machine monitoring system using the same which is capable of improving the accuracy in determining fuel property. The working machine is provided with an engine operation parameter acquisition module (1041) that acquires an engine operation parameter representing the operation state of an engine mounted on the working machine; a refueling time acquisition module (1011) that acquires a refueling time when the working machine is supplied with fuel; and a fuel property determination module (1014) that determines the property of the fuel based on a comparison result of the time when the engine operation parameter changes, with the refueling time.