The present invention relates to a system and method for managing the temperature of fuel injected into internal combustion engines from a mixture of an air flow and fuel applicable to a vehicle that uses an injection system with high pressures.

A leakage determination process determines whether there is fuel leakage from a fuel supply system on condition that a start switch of an internal combustion engine has been turned on. A start estimation process estimates whether there is a possibility of a start operation before the start switch is turned on. Processing circuitry does not execute the fuel injection through the fuel injection process if the leakage determination process has not been completed in a case in which the start switch has already been turned on. The processing circuitry starts the leakage determination process when the start estimation process estimates that there is the possibility of a start operation even if the start switch is not turned on.

Provided is a control device for an internal combustion engine, which is a control device for a spark ignition internal combustion engine, configured to directly inject alcohol-containing fuel into a cylinder, the control device including a controller configured to control injection timing when the fuel is injected into the cylinder from a fuel injection device and ignition timing when the fuel in the cylinder is ignited by a spark; and an ambient temperature detecting part configured to detect an ambient temperature, the controller executing spark ignition of the fuel in a fuel injection period in which the fuel is injected into the cylinder when the ambient temperature is equal to or smaller than a predetermined value.

Systems and apparatuses include an a system including an engine out sensor, an exhaust sensor, and one or more processing circuits comprising one or more memory devices coupled to one or more processors. The one or more memory devices are configured to store instructions thereon that, when executed by the one or more processors, cause the one or more processors to receive the engine out sensor information from the engine out sensor, receive the exhaust information from the exhaust sensor, determine the aftertreatment system characteristic based on the exhaust information, compare the aftertreatment system characteristic to an exhaust condition, determine an acceptable input value when the aftertreatment system characteristic meets the exhaust condition, and control at least one of a fuel system actuator and an air handling actuator to achieve the acceptable input value.

A controller is configured to control an internal combustion engine mounted on a vehicle. The controller includes processing circuitry. The processing circuitry outputs a valve closing signal to a shut-off valve, and executes, when a stopping operation of the internal combustion engine is performed, a determination process of determining whether the shut-off valve is stuck open based on a decrease amount of a passage fuel pressure. The controller does not execute the determination process when at least one of a condition that a vehicle speed is higher than a first determination speed and a condition that an engine rotation speed is higher than or equal to a second determination speed is met.

A process for identifying fueling system failure modes includes operating a failure mode model derived from a big data dataset, the big data dataset comprising field performance data received from a plurality of engine fueling systems including one or more injectors, the field performance data comprising injection pressures and injection quantitates for a plurality of injections performed by one or more injectors of the engine fueling systems, the failure mode model including a plurality of predetermined rules for evaluating operation of engine fueling systems; receiving target field performance data from a target fueling system including one or more target injectors configured to provide fuel to a target engine system for performance evaluation; evaluating the target field target performance data using the failure mode model to identify a failure mode of the target fueling system; and performing a compensatory action in response to the evaluating.

A method is proposed for synchronizing a combustion engine in a hybrid vehicle provided with an electric motor, comprising the following steps: applying an initial rotation speed setpoint value to the electric motor (typically 2,500 revolutions per minute), then synchronizing the combustion engine on the basis of the rotation signals from the camshaft and the crankshaft. In the event of a camshaft signal failure, an initial combustion engine position assumption is selected from among a plurality of possible assumptions, and injection tests are performed by adjusting the rotation speed setpoints. Once the idle speed setpoint has been reached, the rotation speed setpoint value of the electric motor is reduced to a new value (typically 2,000 revolutions per minute). If the assumption is confirmed, the speed setpoint process is stopped; if not, another assumption is tested until confirmation occurs.

A leakage determination process determines whether there is fuel leakage from a fuel supply system on condition that a start switch of an internal combustion engine has been turned on. A start estimation process estimates whether there is a possibility of a start operation before the start switch is turned on. Processing circuitry does not execute the fuel injection through the fuel injection process if the leakage determination process has not been completed in a case in which the start switch has already been turned on. The processing circuitry starts the leakage determination process when the start estimation process estimates that there is the possibility of a start operation even if the start switch is not turned on.

A combustion engine system may include a combustion engine having a cylinder and a fuel injection system. The fuel injection system may include a common rail containing pressurized fuel and a fuel injector in fluid communication with the common rail and the cylinder, or other cylinder access pathway. The system may also include an electronic control module in signal communication with the fuel injector for controlling opening and closing of the fuel injector, where opening the fuel injector may include holding the fuel injector open for a particular amount of time. The electronic control module may be configured for accumulating wear on the fuel injector as accumulated wear, determining the particular amount of time as a compensation time to compensate for the accumulated wear, and operating the fuel injector by opening the fuel injector for the compensation time.