A method includes operating an air boosting apparatus of a two-stroke, opposed piston engine as a function of one or more factors including a first engine speed, a first torque, demand, a first altitude, a first transient rate, and one or more first ambient conditions to provide a first pressure S ratio (PR} of pre-turbine pressure (PTP) versus turbocharger compressor discharge pressure (CDP} and a first air-to-fuel ratio (AFR).

A blow-by gas supply device includes an upstream-side passage, a downstream-side passage, a gas passage, a bypass passage, a valve mechanism, and a valve control unit. The device is provided in an engine including a compressor, and recirculates blow-by gas upstream of the compressor. The upstream-side passage is coupled to an input port of the compressor. The downstream-side passage is coupled to an output port of the compressor. The gas passage is coupled to the upstream-side passage and guides the blow-by gas from inside of the engine to the upstream-side passage. The bypass passage is coupled to the upstream-side passage and the downstream-side passage and guides the intake air from the downstream side passage to the upstream side passage. The valve mechanism is provided in the bypass passage and switched between communication and cutoff states. The valve control unit controls the valve mechanism in the communication or cutoff state.

An electrode of an ignition plug at the time of cooling start is heated to suppress generation of hydrocarbons at the time of cooling start of an internal combustion engine, and to reduce a production cost of an exhaust catalyst. Therefore, an ignition control unit 83 is provided to control a discharge of an ignition plug 200 provided in a cylinder 150. In a first combustion cycle after the operation of an internal combustion engine 100 is started, the ignition control unit 83 performs a discharge of the ignition plug 200 in a state where fuel in the cylinder 150 is not injected from a fuel injection valve 134 into the cylinder 150.

An internal combustion engine control device is provided. The internal combustion engine control device is provided with a generator that is driven by exhaust gas of the internal combustion engine. The internal combustion engine control device is capable of increasing the power generation of the generator. The internal combustion engine control device includes an exhaust amount control unit. The exhaust amount control unit increases the amount of the exhaust gas supplied to the generator in a coasting state.

A method is described for influencing the engine control of a single-track motor vehicle, in which the current driving situation is ascertained, a predefined driving situation is selected from a specified class of predefined driving situations as a function of the current driving situation, and the engine control is influenced as a function of the selected predefined driving situation in a manner that is independent of the driver.

Methods and systems are provided for determining whether there is a source of undesired evaporative emissions stemming from a fuel system and/or an evaporative emissions system of a vehicle. In one example, a method includes initiating an evacuation of the fuel system and the evaporative emissions system to conduct an evaporative emissions test diagnostic, in response to a status of a traffic light that the vehicle is approaching. In this way, the fuel system and the evaporative emissions system are evacuated prior to the vehicle coming to a stop, and then a pressure bleed-up portion of the test is conducted while the vehicle is stopped at the traffic light.

Methods and systems are presented for improving performance of a vehicle operating in a cruise control mode where a controller adjusts torque output from a vehicle to maintain vehicle speed within a desired range. The methods and systems include adapting a vehicle dynamics model and a vehicle fuel consumption map that provide input to nonlinear model predictive controller.

The internal combustion engine includes: a plurality of cylinders each including a piston that reciprocally operates in association with rotation of a crankshaft, and an intake valve and an exhaust valve that open and close a combustion chamber; a starter motor that drives and rotates the crankshaft; and a valve opening-closing timing control mechanism that sets opening and closing timings of the exhaust valve by driving an electric actuator. If an environmental temperature detected by an environmental temperature sensor is less than 10 degrees below freezing, the control device controls the electric actuator such that the closing timing of the exhaust valve is made different from a top dead center of the piston, at a point in time when cranking is performed, and an initial combustion in one of the plurality of cylinders that is set to be the cylinder in which combustion is performed first is performed.

An exhaust-gas purification system and method controls an internal combustion engine having at least one cylinder-piston unit operating in a overrun (drag) mode in which piston motion is induced by motion of an output shaft of a drive output unit associated with the internal combustion engine. A control device controls, for each of cylinder-piston unit, an intake fluid, an exhaust valve and fuel injection to heat an exhaust emission control device by deactivating fuel injection, passing the substantially fuel-free intake fluid into the cylinder, compressing and thereby heating the fluid in the cylinder, and passing the heated outlet fluid to the exhaust emission control device. The control device may control the amount of heating based on measurement and/or use of a temperature model of the exhaust emission control device.

A method that may include obtaining environmental parameters related to one or more routes of a trip for a first vehicle system, and determining one or more expenditure sections and one or more charging sections of the one or more routes by predicting where the first vehicle system will consume energy and where the first vehicle system will generate the energy, respectively, during the trip based on the environmental parameters. A first trip plan may be obtained for the trip based on the one or more expenditure sections and the one or more charging sections, the trip plan designating one or more operational settings for the first vehicle system for travel during the trip.