There is provided with an engine control device that can reduce the time it takes to start the monitoring of an output of an engine. The engine control device comprises a monitor unit configured to monitor an output of an engine when engine speed is a threshold or more, and a control unit configured to control the engine based on a result of the monitor unit, wherein the monitor unit includes an output determination unit that determines whether the output of the engine is excessive, and a change unit that changes in accordance with a warm-up state of the engine, the threshold.

An engine operation control method for a hybrid electric vehicle includes determining a necessity for warm up control for an engine, determining a time required for the warm up control upon determining that the warm up control is necessary, predicting driving conditions in a predetermined forward range, determining a time or a point at which driving power of the engine is required in the predicted driving conditions, determining a control start time or a control start point to complete the warm up control before arrival at the determined time or point at which the driving power of the engine is required based on the determined time required for the warm up control, and starting the warm up control upon arrival at the control start time or the control start point.

An internal combustion engine includes an engine body, an HC adsorption and removal catalyst in an exhaust, including an HC adsorption layer and a catalyst layer, and having a desorption temperature of the HC from the HC adsorption layer lower than an HC removal temperature of a temperature where a rate of removal of HC at the catalyst layer is a predetermined rate or more when an air-fuel ratio of the exhaust is near the stoichiometric air-fuel ratio, and an air feed device for feeding air to the HC adsorption and removal catalyst. A control device for an internal combustion engine includes an air feed control for controlling feed air to the HC adsorption and removal catalyst when a condition stands. The condition includes the temperature of the HC adsorption and removal catalyst being the desorption temperature or more and less than the HC removal temperature.

In some embodiments, a vehicle includes a temperature monitoring controller. The temperature monitoring controller is a processor, control module, or other suitable hardware that is configured to receive temperature sensor values from an engine control module (ECM) when an ignition bus is in a powered on state, and to decide when the engine should be automatically started in order to maintain a temperature above a low temperature threshold. The temperature monitoring controller periodically causes an ignition bus of the vehicle to be placed in the powered on state when the engine is shut down in order to collect temperature sensor values. The temperature monitoring controller determines whether to automatically start the engine, and if not, determines how long to wait before collecting temperature sensor values again based on a rate of change of the temperature sensor values.

During a hybrid drive, a hybrid vehicle sets an engine required power based on a driving required power and controls an engine to output the engine required power, while controlling a motor to drive the hybrid vehicle with the driving required power. When a catalyst temperature of an exhaust emission control device is equal to or lower than a predetermined temperature that requires warming up, in the state that an output upper limit power which a power storage device is allowed to output is equal to or larger than a predetermined power, the hybrid vehicle sets a power calculated by subtracting the output upper limit power from the driving required power, to the engine required power. In the state that the output upper limit power is smaller than the predetermined power, the hybrid vehicle sets the driving required power to the engine required power.

A vehicle, engine controller and method for coordinating direct split injection of two or more pulses of fuel during a working cycle of a reactivated cylinder which was deactivated in a previous working cycle is described. By using split injection for the reactivated cylinder, the particulate matter and particulate number (“PM/PN”) generated by the reactivated cylinder is reduced.

Methods and systems are provided for expediting heating of an engine and an emissions device upon cold startup of the engine. In one example, a method may include prior to cold startup of an engine, operating an e-compressor and opening a recirculation valve of a recirculation passage coupled across the e-compressor to flow compressed intake air from an outlet of the e-compressor through the recirculation passage to an inlet of the e-compressor and starting the engine upon a temperature at the outlet of the e-compressor reaching a threshold and continuing to operate the e-compressor while the engine is on. The heated intake air resulting from the flow of compressed intake air through the recirculation passage raises a temperature of combustion and a temperature of exhaust gas, which may decrease catalyst light-off time of the emissions device.

A method for continuous variable valve duration (CVVD) startup control may include a duration time delay control to prevent an engine revolutions per minute (RPM) variation through applying of a delay time with respect to a startup duration in the case where the startup duration at an initial startup is switched to a driving region duration after the startup lapse by a CVVD controller.

An engine controller to control a plurality of engines is disclosed. The engine controller may determine that power to a load is to be increased, wherein the load is configured to be powered by one or more of the plurality of engines; determine that an engine, of the plurality of engines, is configured to provide supplemental power to the load after a temperature of the engine satisfies a threshold, wherein the threshold corresponds to a warm-up operation of the engine being completed; determine that the temperature of the engine does not satisfy the threshold; obtain, via an operator interface, an authorization to bypass the warm-up operation of the engine; and bypass, based on obtaining the authorization, the warm-up operation for the engine to permit the engine to provide instantaneous power to the load.

A controller for vehicle is provided. A determining section obtains fuel pressure in a delivery pipe and performs a rationality check for determining whether the obtained fuel pressure is within a normal range. The determining section shifts the normal range toward a high pressure side when a second index value of a vehicle outside temperature is higher than a first index value as compared with when the second index value is not higher than the first index value. The second index value is obtained when the determining section is activated. The first index value is stored in a nonvolatile memory before a main switch is turned off so that power supply is stopped.