Abstract: A fuel heater including an engine that is driven by combustion of air-fuel mixture including air and fuel supplied to a combustion chamber within a cylinder, a battery that stores electricity, and a motor that drives the engine by the electricity supplied from the battery, the fuel heater includes a fuel heating portion heating the fuel with the electricity supplied from the battery, and a controller performing one of a first control by increasing the amount of electricity supplied from the battery to the fuel heating portion and a second control by increasing heating time of the fuel by the fuel heating portion for a time period until the engine starts in a case where a battery charge remaining of the battery is equal to or smaller than a remaining threshold value at a start of the engine.

Abstract: A control device for an onboard engine is configured to control the oil discharge pressure of an oil pump and execute, when determining that there may be an abnormality in the control of the oil discharge pressure, a change process that increases the target discharge pressure to a value that is greater than that before it is determined that there may be an abnormality in the control. When a discharge pressure sensor value in a situation in which the discharge pressure is being controlled based on the target discharge pressure increased through execution of the change process does not become greater than or equal to a discharge pressure threshold, the control device sets an upper limit for the engine rotation speed and increases the upper limit as the discharge pressure sensor value increases.

Abstract: A solenoid valve control apparatus includes a basic electric current value set portion configured to set a basic electric current value every first cycle, a dither electric current value set portion configured to set a dither electric current value of which a cycle corresponds to a dither cycle, a target electric current value set portion configured to set a target electric current value, an electric current detection portion configured to detect an actual electric current value, a duty ratio set portion configured to set a duty ratio every second cycle which is longer than the dither cycle, and a PWM control portion configured to perform PWM control on the solenoid on the basis of the duty ratio.

Abstract: A control device for an onboard engine is configured to control the oil discharge pressure of an oil pump and execute, when determining that there may be an abnormality in the control of the oil discharge pressure, a change process that increases the target discharge pressure to a value that is greater than that before it is determined that there may be an abnormality in the control. When a discharge pressure sensor value in a situation in which the discharge pressure is being controlled based on the target discharge pressure increased through execution of the change process does not become greater than or equal to a discharge pressure threshold, the control device sets an upper limit for the engine rotation speed and increases the upper limit as the discharge pressure sensor value increases.

Abstract: A pump device includes: a variable capacity-type pump unit configured to include an inner rotor having a plurality of external teeth , an outer rotor having a plurality of internal teeth meshing with a portion of the plurality of external teeth of the inner rotor, a housing, a suction port and a discharge port, an adjustment member adjusting a discharge pressure of a fluid, a biasing mechanism biasing the adjustment member, a control flow passage causing a fluid pressure from the discharge port to be applied to the adjustment member, a solenoid valve adjusting the fluid pressure applied to the adjustment member, a bypass flow passage, and a relief valve; a rotation speed sensor measuring a rotation speed of a drive source; and a control unit controlling the solenoid valve.

Abstract: A cooling control device includes a coolant pump being driven at an internal combustion engine to supply a coolant of the internal combustion engine, a heat exchanger being provided at each of plural flow paths that are formed in parallel to one another, a flow amount control valve controlling the coolant being supplied to the plural flow paths, and a control portion controlling the flow amount control valve. The control portion performs a control in a first supply mode in which the coolant is supplied to a first flow path, and a second supply mode in which the coolant is supplied to a second flow path during a supply of the coolant to the first flow path. The control portion operates a switching control shifting to the second supply mode temporarily in a state of being in the first supply mode, and returning to the first supply mode.

Abstract: A cooling control device includes a first heat exchanger to which a coolant of an internal combustion engine is supplied, a radiator to which the coolant of is supplied, a coolant pump supplying the coolant, a flow amount control valve controlling a flow amount of the coolant, and a control unit controlling the flow amount control valve. The control unit acquires a first amount of heat which is accumulated in the coolant, a second amount of heat which is accumulated in the coolant by a heat exchange with the first heat exchanger, and a third amount of heat for changing a temperature level of the coolant to a targeted temperature level. A targeted dissipation amount is set from the first, second and third amounts of heat, and an opening of the flow amount control valve is set by a feedforward control.

Abstract: There is provided a fuel injection device. Based on a current intake air pressure and a previous intake air pressure of an engine at the predetermined crank position, an intake air pressure variation of the engine at the predetermined crank position is calculated as a measured intake air pressure variation. Based on the current rotational speed and the previous rotational speed of the engine at the predetermined crank position, and a fully-closed-state intake air pressure conversion data item, the fully-closed-state intake air pressure variation of the engine at the predetermined crank position is calculated. The measured intake air pressure variation is corrected based on the fully-closed-state intake air pressure variation. Based on the corrected measured intake air pressure variation, the current rotational speed at the predetermined crank position, and the transient fuel injection quantity conversion data item, the transient fuel injection quantity at the predetermined crank position is determined.

Abstract: A cooling control device includes: a cooling liquid pump whose rotational speed is set in accordance with a rotational speed of an engine; a cooling flow path and a heat exchanger which cool cooling liquid discharged from the engine; a flow rate control valve which is provided in the cooling flow path, changes an opening degree by driving a motor, and adjusts a flow rate of the cooling liquid; and a control portion which feedback-controls the opening degree of the flow rate control valve based on a difference between a temperature of the cooling liquid and a target temperature of the cooling liquid, and corrects a gain of the feedback control in accordance with the rotational speed of the engine.

Abstract: There is provided a fuel injection device. Based on a current intake air pressure and a previous intake air pressure of an engine at the predetermined crank position, an intake air pressure variation of the engine at the predetermined crank position is calculated as a measured intake air pressure variation. Based on the current rotational speed and the previous rotational speed of the engine at the predetermined crank position, and a fully-closed-state intake air pressure conversion data item, the fully-closed-state intake air pressure variation of the engine at the predetermined crank position is calculated. The measured intake air pressure variation is corrected based on the fully-closed-state intake air pressure variation. Based on the corrected measured intake air pressure variation, the current rotational speed at the predetermined crank position, and the transient fuel injection quantity conversion data item, the transient fuel injection quantity at the predetermined crank position is determined.