A drive control system includes an engine, an electric turbocharger, and a controller. The engine includes a cylinder and a piston provided in a slidable manner inside the cylinder and rotates a crankshaft in accordance with sliding of the piston. The electric turbocharger supplies compressed air into the cylinder. The controller controls the engine and the electric turbocharger. The controller includes at least one processor and at least one memory coupled to the processor. The processor transmits a stoppage signal for stopping the engine to the engine, and stops the piston at a position where a crank angle is within a predetermined range from 60? before a top dead center to 30? before the top dead center by causing the electric turbocharger to supply the compressed air into the cylinder in a period from when the stoppage signal is transmitted to when stopping the engine is completed.

Provided is an air leading type stratified scavenging two-stroke internal combustion engine including an air passage configured to allow supply of air to a scavenging passage configured to allow communication between a crank chamber and a combustion chamber, at least one sensor configured to detect an operating condition of an engine, and a fuel valve configured to control fuel supply to the air passage based on detection performed by the at least one sensor. The fuel supply to the air passage is controlled by the fuel valve at times other than start and idling of the engine or at needed times in addition to the start or the idling of the engine.

During a predetermined operation state in which the opening degree of a throttle valve is fixed, an air flow meter positioned more on the upstream side than a pressure control valve detects a first intake air amount when the opening degree of the pressure control valve positioned on the upstream side of the throttle valve is set to a predetermined first valve opening degree and a second intake air amount when the opening degree of the pressure control valve is set to a predetermined second valve opening degree smaller than the first valve opening degree. On the basis of the first intake air amount and the second intake air amount, a diagnosis is made regarding whether there is an abnormality in a first pipe, a second pipe, a third pipe and the like which are included in a blow-by gas recirculation system for blow-by gas treatment.

An engine includes an engine stop switch for stopping the engine, and a cooling part included in a holding portion or passage of a cooling liquid. The engine stop switch is placed at the cooling part or at a peripheral part of the cooling part.

An engine consumes fuel and air to generate an exhaust gas stream. An exhaust system channels the exhaust gas stream from the engine to a tailpipe. An aftertreatment system is included in the exhaust system and includes a catalyst. An exhaust throttle valve is disposed in the exhaust system downstream from the aftertreatment system. An actuator controls an amount of air pumped through the engine. A controller operates the exhaust throttle valve and/or the actuator to control emissions from the exhaust system during a cold start and following a deceleration fuel cutoff event.

The disclosure relates to a method and a device for operating a hybrid vehicle having an internal combustion engine, an electric motor, a fuel tank, an activated carbon filter, an air filter, an intake tract, a purging line arranged between the activated carbon filter and the intake tract, a purge air pump arranged between the activated carbon filter and the intake tract, a tank purge valve arranged between the purge air pump and the intake tract, and a ventilation arranged between the fresh air filter and the activated carbon filter. The hybrid vehicle can be operated in an electric mode in which the electric motor is activated and the internal combustion engine is deactivated. In such a hybrid vehicle, in electric mode the purge air pump is activated and detection of the concentration of hydrocarbons present in the activated carbon filter is performed with the purge air pump activated.

An internal combustion engine-based system includes an internal combustion engine. The internal combustion engine-based system includes an engine interrupt connected to the engine. The engine interrupt is configured to selectively stop the operation of the engine. The internal combustion engine-based system includes a controller in communication with the engine interrupt. The internal combustion engine-based system includes a carbon monoxide detector in communication with the controller. The controller uses the engine interrupt to stop the operation of the engine when the carbon monoxide detector provides the controller with signals that are representative of a carbon monoxide level proximate the internal combustion engine that together form a trend of building carbon monoxide amounts over a set time interval.

A system and method for controlling a hydraulic fracturing pumping system is described herein. The method can include stopping an engine coupled to a hydraulic fracturing pumping system including at least one pump by supplying pressure from an accumulator to a hydraulic braking system including a brake. The method can also include starting the engine coupled to the hydraulic fracturing pumping system and releasing the brake.

A vehicular automatic braking system includes a forward-viewing camera, a rearward-viewing camera and a radar sensor disposed at an equipped vehicle. When the equipped vehicle is travelling in a traffic lane of a road and a leading vehicle is present forwardly of the equipped vehicle and travelling in the same traffic lane, braking of the equipped vehicle is automatically controllable to mitigate collision by the equipped vehicle with the leading vehicle. Responsive to determination by the vehicular automatic braking system that a following vehicle is following the equipped vehicle and when the determined following vehicle is within a threshold distance from the equipped vehicle and is approaching the equipped vehicle above a threshold rate of approach, automatic braking of the equipped vehicle to mitigate collision by the equipped vehicle with the leading vehicle is adjusted to mitigate collision at the rear of the equipped vehicle by the determined following vehicle.

A controller for an aftertreatment system coupled to an engine is configured to: in response to receiving an engine shutdown signal, determine an estimated amount of ammonia stored on a selective catalytic reduction (SCR) catalyst included in the aftertreatment system; in response to determining that the estimated amount of ammonia stored in the SCR catalyst is less than an ammonia storage threshold, cause flow of a heated gas towards the SCR catalyst; cause insertion of reductant into an exhaust gas flowing through the aftertreatment system; and in response to determining that the estimated amount of ammonia stored in the SCR catalyst is equal to or greater than the ammonia storage threshold, cause shutdown of the engine.