A method for supplying fuel to a direct injection fuel pump of an internal combustion engine is described. In one example, pressure and/or temperature of a fuel supplied to the direct injection fuel pump may be adjusted to ensure liquid fuel is supplied to the direct injection fuel pump so that the possibility of engine air-fuel ratio errors may be reduced.

A method for supplying fuel to a direct injection fuel pump of an internal combustion engine is described. In one example, pressure and/or temperature of a fuel supplied to the direct injection fuel pump may be adjusted to ensure liquid fuel is supplied to the direct injection fuel pump so that the possibility of engine air-fuel ratio errors may be reduced.

A method for controlling an electrical system in a vehicle. The electrical system (11) comprises: at least a first switch (ES2) arranged such that operating the switches will isolate a part of the electrical system; and a control unit, the control unit being arranged to operate the switches. The method comprises: putting the control unit into a first operational mode, the first operational mode comprising at least a first arrangement of switches; receiving a request to enter a second operational mode, the second operational mode comprising at least a second arrangement of switches; determining the priority of the first and second operational modes at least in part by consulting a database of operational modes and their priorities; switching the control unit into the second operational mode if the second operational mode has a higher priority than the first operational mode; and continuing in the first operational mode otherwise.

In one embodiment an engine system includes a cylinder, an inlet valve configured to control the flow of gases into the cylinder, an outlet valve configured to control the flow of gases out of the cylinder, a throttle configured to control the flow of fuel into the cylinder, a memory including program instructions stored therein, and a processor operably connected to the inlet valve, the outlet valve, the throttle, and the memory, and configured to execute the program instructions to control the inlet valve and the outlet valve in accordance with an HCCI valve lift profile and an SI valve open/close profile, and activate a first spark in the cylinder while controlling the inlet valve and the outlet valve in accordance with the HCCI valve lift profile and the SI valve open/close profile.

In one embodiment an engine system includes a cylinder, an inlet valve configured to control the flow of gases into the cylinder, an outlet valve configured to control the flow of gases out of the cylinder, a throttle configured to control the flow of fuel into the cylinder, a memory including program instructions stored therein, and a processor operably connected to the inlet valve, the outlet valve, the throttle, and the memory, and configured to execute the program instructions to control the inlet valve and the outlet valve in accordance with an HCCI valve lift profile and an SI valve open/close profile, and activate a first spark in the cylinder while controlling the inlet valve and the outlet valve in accordance with the HCCI valve lift profile and the SI valve open/close profile.

A control device that controls a vehicle drive device. A starting control section executes internal combustion engine starting control in which the internal combustion engine in a stationary state is started while causing the disconnecting engagement device to transition from a disengaged state to a direct engagement state. A timing decision section that decides, on the basis of a rotational speed of the internal combustion engine, a supply start timing to start supply of a hydraulic pressure to a specific engagement device, which is one of the plurality of shifting engagement devices and is caused to transition from a disengaged state to a direct engagement state in order to establish a target shift speed for the speed change mechanism after a change, in the case where the target shift speed is changed during execution of the internal combustion engine starting control.

A control device that controls a vehicle drive device. A starting control section executes internal combustion engine starting control in which the internal combustion engine in a stationary state is started while causing the disconnecting engagement device to transition from a disengaged state to a direct engagement state. A timing decision section that decides, on the basis of a rotational speed of the internal combustion engine, a supply start timing to start supply of a hydraulic pressure to a specific engagement device, which is one of the plurality of shifting engagement devices and is caused to transition from a disengaged state to a direct engagement state in order to establish a target shift speed for the speed change mechanism after a change, in the case where the target shift speed is changed during execution of the internal combustion engine starting control.

An engine is provided with an ECU for executing engine control by using various control parameters. The ECU includes a learning map storing a learning value of the control parameter and executes weighting learning control of the learning value. In the weighting learning control, each time the control parameter is acquired, a weight w.sub.kij decreasing larger if a distance from a position of an acquired value z.sub.k of the control parameter to a grid point is larger is set to each of the grid points of the learning map. Then, on the basis of the acquired value z.sub.k of the control parameter and the weight w.sub.kij, the learning values Z.sub.ij(k) at all the grid points are updated. As a result, all the learning values can be efficiently updated in one session of the learning operation.

An engine is provided with an ECU for executing engine control by using various control parameters. The ECU includes a learning map storing a learning value of the control parameter and executes weighting learning control of the learning value. In the weighting learning control, each time the control parameter is acquired, a weight w.sub.kij decreasing larger if a distance from a position of an acquired value z.sub.k of the control parameter to a grid point is larger is set to each of the grid points of the learning map. Then, on the basis of the acquired value z.sub.k of the control parameter and the weight w.sub.kij, the learning values Z.sub.ij(k) at all the grid points are updated. As a result, all the learning values can be efficiently updated in one session of the learning operation.

An industrial vehicle which is equipped with an engine and having an Eco-mode in which torque of the engine is restricted includes an accelerator, an accelerator opening detector that detects an opening of the accelerator, a vehicle speed detector that detects a speed of the vehicle, an engine speed detector that detects a speed of the engine, and a torque restriction releasing unit which, when the torque of the engine is restricted, if conditions that the opening of the accelerator detected by the accelerator opening detector is a first predetermined value or greater, that the vehicle speed detected by the vehicle speed detector is a second predetermined value or smaller and that the engine speed detected by the engine speed detector is a third predetermined value or smaller are satisfied, releases the torque restriction.