A vehicle system includes an internal combustion engine including a fuel injection valve configured to inject fuel into an intake port and a throttle valve configured to control intake air amount for controlling engine torque, and being mounted on a vehicle. The vehicle system further includes a control device configured to control the vehicle. The control device includes a fuel increment controlling component that executes a fuel increment control to make the air-fuel ratio richer than the stoichiometric air-fuel ratio in a plurality of cycles started from a fuel injection start cycle at the time of engine start-up. Where a torque rate correlation value correlated with a torque rate that is a time rate of increase of the engine torque is lower, the fuel increment controlling component decreases a total fuel injection amount in the plurality of cycles.

Method and system for starting an internal combustion engine of a hybrid vehicle, adapted to rotate a drive shaft providing torque via a transmission unit comprising a first clutch connecting the engine to an input shaft of a gearbox connected to a torque converter connected to a second clutch connecting the torque converter to the at least one driving wheel, where the input shaft is connected to an electric machine; the method comprising: disengaging the second clutch to a predetermined torque level such that there is a slip in the second clutch; engaging the lock-up clutch; engaging the first clutch to bring the engine to a first rotational speed; disengaging the first clutch when the engine has reached the first rotational speed; starting the engine, and engaging the first clutch when the engine has started and rotates with a second rotational speed.

Various applications for use of mass estimations of a vehicle, including to control operation of the vehicle, sharing the mass estimation with other vehicles and/or a Network Operations Center (NOC), organizing vehicles operating in a platoon and/or partially controlling the operation of one or more vehicles operating in a platoon based on the relative mass estimations between the platooning vehicles. When vehicles are operating in a platoon, the relative mass between a lead and a following vehicle may be used to scale torque and/or brake commands generated by the lead vehicle and sent to the following vehicle.

A system for controlling the powertrain of a hybrid vehicle which includes an internal combustion engine, an electric machine, and an electric accumulator, the system performing the following steps: detecting an overpressure in the injection rail, with respect to a setpoint pressure; injecting into the internal combustion engine a predetermined quantity of fuel corresponding to the volume of fuel to be removed from the injection rail in order to lower the pressure in the injection rail down to the setpoint pressure; and operating the electric machine in generator mode to absorb the torque generated by the injection of the predetermined quantity of fuel into the internal combustion engine.

Provided are a travel control device, a vehicle, a driving assistance device, and a travel control method that are capable of improving travel control responsiveness. The travel control device comprises: an automatic travel control unit that, when an automatic travel function is active for vehicle travel control, performs a process for calculating and outputting a target output torque for an engine installed in the vehicle through feedback calculation based on the difference between a target value for a control parameter related to the automatic travel function and the actual value of the control parameter; and an engine control unit that controls the engine such that the outputted target output torque and the output torque of the engine match.

Methods and systems are provided for a multicomponent aftertreatment device arranged in a vehicle exhaust gas passage. In one example, a system may include an oxygen storage catalyst and an underbody trap catalyst comprising metal modified zeolite, the oxygen storage catalyst arranged upstream of the underbody trap catalyst in an exhaust passage of the vehicle.

Systems and methods are disclosed for determining, and displaying, the regulatory compliance status of a motorized vehicle, a driver of a motorized vehicle, or a non-vehicle machine. An authorized agent, such as a law enforcement officer, can perform a remotely-initiated safe stop of a motorized vehicle to prevent a high-speed chase. A system management center can receive, store, and transmit regulatory compliance records indicating the regulatory compliance status of drivers, motorized vehicles, and non-vehicle machines. A motorized vehicle can detect, and report, a driver “tail-gating” the motorized vehicle. The regulatory compliance history of drivers, motorized vehicles, and non-vehicle machines can be queried by authorized users.

An engine control method of a hybrid electric vehicle is provided. The method includes detecting a state of charge (SOC) of a main battery of the hybrid electric vehicle and detecting whether a brake requires operation when the main battery is in a fully-charged state or a charging-limiting state. An engine fuel cut of the hybrid electric vehicle is executed when a request for the engine brake is generated and an engine is operated to maximize an engine load of the hybrid electric vehicle.

An electronic control unit carries out deceleration fuel cutoff for stopping fuel injection in an engine, and deceleration lockup for engaging a lockup clutch, at the time of deceleration of a vehicle. The electronic control unit then ends deceleration fuel cutoff and deceleration lockup upon fulfillment of a recovery condition, On the other hand, when a request to restrain heat-up of a filter device is made before fulfillment of the recovery condition, the electronic control unit stops deceleration fuel cutoff, but continues deceleration lockup.

An exhaust gas purification system for an internal combustion engine includes a particulate filter (also referred to as GPF) to collect particulate matter (PM) in exhaust gas, an automatic transmission including a torque converter with a lock-up clutch, and a controller that controls the internal combustion engine to perform fuel cut when the internal combustion engine is decelerating and a temperature correlation value of lubricating oil (ATF) is higher than a determination value, and controls the automatic transmission to engage the lock-up clutch during execution of the fuel cut. The controller is configured to estimate a deposit amount of PM deposited on the GPF, and change the determination value to a smaller value than before the deposit amount exceeds a first deposit amount when the deposit amount exceeds a predetermined first deposit amount.