A method for controlling a fuel pump for a hybrid diesel vehicle may include determining, by a control device, whether to drive the hybrid diesel vehicle in an EV driving mode or in an engine driving mode by reflecting a vehicle driving state information value and stopping, by the control device, operation of a fuel pump relay when the determination is made to drive in the EV driving mode.

A motorcycle's transmission control device is provided in which, in a case of a clutchless shift operation, disengagement of a fit of gears of a transmission and the fit of subsequent gears thereof can be smoothly achieved. A throttle operation unit controls the degree of opening of a throttle valve to become a first throttle opening-degree when a clutchless shifting unit determines that a clutchless down-shift operation can be implemented, and controls the degree of opening of the throttle valve to become a second throttle opening-degree when the clutchless shifting unit determines that a fit between shift gears is disengaged by the clutchless down-shift operation.

Methods and systems are provided for a multi-fuel engine. In one example, a method includes operating engines of rail vehicles at a desired substitution ratio to recharge an energy storage device of a rail vehicle operating in an all-electric mode to meet a requested total power.

A hybrid vehicle includes an internal combustion engine, an electrical storage device, an electric motor, an exhaust emission control device, and a controller. The internal combustion engine includes a variable valve actuating device. The variable valve actuating device is configured to change an operation characteristic (IN1a, IN2a, IN3a) of an intake valve. The electrical storage device is configured to store electric power. The electric power is generated by using the internal combustion engine. The electric motor is configured to generate a driving force of the hybrid vehicle by using the electric power stored in the electrical storage device. The exhaust emission control device is configured to purify exhaust gas from the internal combustion engine with the use of a catalyst. The controller is configured to execute catalyst warm-up control. The catalyst warm-up control is control for warming up the catalyst of the exhaust emission control device. The catalyst warm-up control includes first control (FIRST WARM-UP CONTROL) and second control (SECOND WARM-UP CONTROL). The first control is control for operating the internal combustion engine at a first operating point (P1). The second control is control for, after the first control is executed, operating the internal combustion engine at a second operating (P2) point irrespective of a driving force that is required to propel the hybrid vehicle. An output of the internal combustion engine at the second operating point (P2) is larger than an output of the internal combustion engine at the first operating

A start control device for an engine includes an engine control unit, a motor control unit, and a control unit which controls the engine control unit and the motor control unit, wherein the control unit, when transferring an engine restart control mode from a motoring control state to a fuel combustion control state, executes the transfer via a motor/engine combined control state, and sets the timing of transferring from the motoring control state to the motor/engine combined control state, to a timing at which a crank angle of a cylinder where fuel is combusted first after starting fuel injection reaches a crank angle at which it is estimated that torque is generated by the first combustion of fuel in the cylinder.

A controller for a vehicle is provided. An air supply passage is connected to a portion upstream of a filter in an exhaust passage. An air supplying process supplies air to the filter through an air supply passage by driving an air pump. An oxygen supplying process supplies oxygen to the filter through the exhaust passage, the oxygen having been passed through a combustion chamber of an internal combustion engine. A reducing process sets an air supply amount per unit time in the air supplying process obtained when the oxygen supplying process and the air supplying process are simultaneously executed to be lower than the air supply amount per unit time in the air supplying process obtained when the oxygen supplying process and the air supplying process are not simultaneously executed.

A control unit detects changes in operation of a powertrain of a heavy-duty vehicle is provided. The control unit obtains information indicating that at least one powertrain sensor signal monitoring sequence is to be performed, and obtains a set of vehicle powertrain operation parameter settings to be applied during the at least one powertrain sensor signal monitoring sequence. The control unit then controls the operation of the powertrain of the heavy-duty vehicle according to the obtained set of vehicle powertrain operation parameter settings for a determined time period. The control unit also determines virtual sensor values based on sensor signals from one or more powertrain sensors, wherein the sensor signals are obtained during said determined time period. Further, the control unit detects a change in the operation of the powertrain of the heavy-duty vehicle in case the determined virtual sensor values indicate a different operation of the powertrain of the heavy-duty vehicle as compared to previously determined virtual sensor values using the same at least one powertrain sensor signal monitoring sequence.

A vehicle system includes a powertrain with a prime mover, a transmission with a number of gears, and foundation brakes. The vehicle system includes an electronic control system configured to determine, prior to reaching a downhill route segment, a pre-downhill target vehicle speed, a pre-downhill target transmission gear for the vehicle, and a downhill vehicle speed limit, control the vehicle to achieve the pre-downhill target vehicle speed and the pre-downhill target transmission gear for the vehicle prior to or upon reaching the downhill route segment, and control the vehicle during the downhill route segment not to exceed the downhill vehicle speed limit.

A system includes a controller having at least one processor coupled to at least one memory device storing instructions that, when executed by the at least one processor, cause the controller to perform operations. The operations include receiving a first indication of a hydrogen limiting condition corresponding to a geographic area. The operations include, responsive to the hydrogen storage value being at or above a hydrogen storage threshold, comparing a predicted state of charge of a battery of the system to a state of charge threshold. The operations include causing a hydrogen combustion engine to consume at least a portion of the hydrogen fuel such that the hydrogen storage value decreases responsive to the predicted state of charge being at or above the state of charge threshold.