Systems for efficiently starting an engine of a hybrid electric vehicle are provided. An example of a system comprises a first processor and a second processor. The second processor is configured to determine when to start an internal combustion engine, cause energy to be supplied from an energy storage device to a generator/motor to cause the generator/motor and crankshaft to rotate to at least a hold speed, transmit a first instruction to a first processor when determining that the internal combination engine should be started. The first processor does not supply fuel to at least one cylinder of the internal combustion engine in response to the first instruction. The second processor is configured to transmit a second instruction to the first processor after a variable period of time has elapse after the generator/motor or crankshaft has reached at least the hold speed.

A powertrain for a machine includes an internal combustion engine, an aftertreatment system including a selective catalytic reduction (SCR) catalyst for treating exhaust gases from the internal combustion engine, and a continuously variable transmission operatively coupled to the internal combustion engine. An electronic controller can measure a catalyst temperature of the SCR catalyst and can inversely adjust an engine speed and a CVT output to selectively regulate a catalyst temperature of the SCR catalyst. In an embodiment, the CVT may be a hydro-mechanical transmission including a hydrostatic transmission and a mechanical transmission.

A vehicle driving apparatus for a vehicle with wheels includes an engine, a transmission mechanism, an input shaft, a power generation motor, and a motor clutch. The transmission mechanism is disposed between the engine and the wheels. The input shaft is disposed between the engine and the transmission mechanism and coupled to a crank shaft of the engine via a damper mechanism. The power generation motor is disposed between the engine and the transmission mechanism and includes a hollow rotor through which the input shaft extends. The motor clutch is switched between an engaged state and a released state. When being the engaged state, the motor clutch couples the input shaft and the hollow rotor. When being in the released state, the motor clutch releases coupling between the input shaft and the hollow rotor.

A heat management control device for a vehicle that includes an electric motor and a power supply section that includes a storage battery and that supplies electrical power to the electric motor. The heat management control device includes a charging device that charges the storage battery through a connection to an external power source, a heat exchanger that performs heat exchange of heat generated by the charging device during charging with fluid flowing in a specific transport path. The heat management control device includes a heat storage section that uses a chemical reaction partway along the specific transport path in order to recover heat from the fluid and that stores the recovered heat, and a fluid supply controller that, from immediately after a vehicle is started, releases heat stored by the heat storage section to the fluid, and selectively supplies the fluid to a predetermined plurality of warm-up targets.

A heat management control device for a vehicle that includes an electric motor and a power supply section that includes a storage battery and that supplies electrical power to the electric motor. The heat management control device includes a charging device that charges the storage battery through a connection to an external power source, a heat exchanger that performs heat exchange of heat generated by the charging device during charging with fluid flowing in a specific transport path. The heat management control device includes a heat storage section that uses a chemical reaction partway along the specific transport path in order to recover heat from the fluid and that stores the recovered heat, and a fluid supply controller that, from immediately after a vehicle is started, releases heat stored by the heat storage section to the fluid, and selectively supplies the fluid to a predetermined plurality of warm-up targets.

An example cooling system for an electric includes an electric motor having a supply opening for receiving coolant and a discharge opening for expelling coolant. The discharge opening is connected to the supply opening via a coolant circuit including a first return line in which a heat exchanger is arranged, a bypass line, and a second return line. The discharge opening is connected to the supply opening by both the first return line and the bypass line, and the bypass line bypasses the heat exchanger arranged in the first return line. A battery is arranged in the second return line, and the second return line is selectively connected to a short-circuit line which causes coolant to flow from a point downstream of the battery and return to the second return line upstream of the battery. Further, a heat accumulator is arranged in the short-circuit line.

An example cooling system for an electric includes an electric motor having a supply opening for receiving coolant and a discharge opening for expelling coolant. The discharge opening is connected to the supply opening via a coolant circuit including a first return line in which a heat exchanger is arranged, a bypass line, and a second return line. The discharge opening is connected to the supply opening by both the first return line and the bypass line, and the bypass line bypasses the heat exchanger arranged in the first return line. A battery is arranged in the second return line, and the second return line is selectively connected to a short-circuit line which causes coolant to flow from a point downstream of the battery and return to the second return line upstream of the battery. Further, a heat accumulator is arranged in the short-circuit line.

A system for emissions mitigation for a hybrid automobile vehicle includes an automobile vehicle provided with motive power from: a battery pack; an engine; and a controller in communication with the battery pack and the engine. A threshold battery pack state-of-charge (SOC) is predetermined. A minimum battery pack SOC is less than the threshold battery pack SOC. An engine-on charge depletion (EOCD) command is issued by the controller to start the engine in an engine-catalyst light-off operation condition when the vehicle is operating using power from the battery pack and when the threshold battery pack state-of-charge (SOC) is reached to mitigate against exceeding vehicle emissions standards.

An ECU is configured to control an SOC control center of a battery and perform an engine torque suppression control. The engine torque suppression control is a control that suppresses output of an engine during a predetermined period of time after starting a system, and causes motor generators to output torque supplementing the suppressed output of the engine. When a deposition amount of PM on a filter exceeds a first specified amount, the ECU raises the SOC control center by controlling the motor generators before stopping the system as compared to when the deposition amount of PM is lower than a specified amount, and performs the engine torque suppression control at a next start after stopping the system.

A controller is configured to control a vehicle that includes an internal combustion engine and an automatic transmission. The controller is configured to execute a shifting process that switches a gear ratio of the automatic transmission and a lean operation process that operates the internal combustion engine with an air-fuel ratio of the air-fuel mixture in a cylinder leaner than a stoichiometric air-fuel ratio. The controller is further configured to, when executing the shifting process during execution of the lean operation process, set an air-fuel ratio in a case in which the shifting process is being executed to a value closer to the stoichiometric air-fuel ratio than an air-fuel ratio in a case in which the shifting process is not being executed.