Abstract: Embodiments for a charge air cooler are provided. In one example, an engine method comprises during a first mode, decreasing a volume of a charge air cooler in response to a compressor operation upstream of the charge air cooler. In this way, compressor surge may be prevented.

Abstract: Methods and systems are provided for adjusting a compressor recirculation valve in response to condensate forming conditions in a charge air cooler (CAC). In one example, a compressor recirculation valve may be opened in response to an induction pressure greater than a threshold pressure when the induction pressure is greater than required to produce a manifold pressure required for a torque demand. Further, a wastegate may be opened to further reduce the induction pressure during certain driving conditions.

Abstract: Embodiments for a charge air cooler are provided. In one example, an engine method comprises during a first mode, decreasing a volume of a charge air cooler in response to a compressor operation upstream of the charge air cooler. In this way, compressor surge may be prevented.

Abstract: Embodiments for a charge air cooler are provided. In one example, an engine method comprises during a first mode, decreasing a volume of a charge air cooler in response to a compressor operation upstream of the charge air cooler. In this way, compressor surge may be prevented.

Abstract: A method of operating an engine including varying a level of ignition energy provided to the engine during an engine start is provided. For example, the ignition energy level may be varied responsive to the amount of alcohol in fuel delivered to the engine in order to improve cold engine starting with higher alcohol fuels.

Abstract: An approach for controlling a turbocharger bypass valve is disclosed. In one example, the turbocharger bypass valve is opened during engine cold start conditions to reduce turbocharger speed. The approach may reduce noise produced by the turbocharger during engine start and warm-up.

Abstract: Methods and systems are provided for adjusting a compressor recirculation valve in response to condensate forming conditions in a charge air cooler (CAC). In one example, a compressor recirculation valve may be opened in response to an induction pressure greater than a threshold pressure when the induction pressure is greater than required to produce a manifold pressure required for a torque demand. Further, a wastegate may be opened to further reduce the induction pressure during certain driving conditions.

Abstract: A method of operating an engine including varying a level of ignition energy provided to the engine during an engine start is provided. For example, the ignition energy level may be varied responsive to the amount of alcohol in fuel delivered to the engine in order to improve cold engine starting with higher alcohol fuels.

Abstract: Embodiments for a charge air cooler are provided. In one example, an engine method comprises during a first mode, decreasing a volume of a charge air cooler in response to a compressor operation upstream of the charge air cooler. In this way, compressor surge may be prevented.

Abstract: A method of operating an engine including varying a level of ignition energy provided to the engine during an engine start is provided. For example, the ignition energy level may be varied responsive to the amount of alcohol in fuel delivered to the engine in order to improve cold engine starting with higher alcohol fuels.

Abstract: A method for controlling engine temperature of an engine with a wide dynamic range is disclosed. In one example, the derivative of an engine temperature is assessed by a controller. The controller may adjust engine actuators to limit engine temperature in response to the derivative.

Abstract: An approach for controlling a turbocharger bypass valve is disclosed. In one example, the turbocharger bypass valve is opened during engine cold start conditions to reduce turbocharger speed. The approach may reduce noise produced by the turbocharger during engine start and warm-up.

Abstract: A method for controlling engine temperature of an engine with a wide dynamic range is disclosed. In one example, the derivative of an engine temperature is assessed by a controller. The controller may adjust engine actuators to limit engine temperature in response to the derivative.

Abstract: A method for controlling engine temperature of an engine with a wide dynamic range is disclosed. In one example, the derivative of an engine temperature is assessed by a controller. The controller may adjust engine actuators to limit engine temperature in response to the derivative.

Abstract: A method of operating the evaporative purge system for an engine of a vehicle propulsion system is provided. In one example, the method provides for charging and purging two fuel vapor canisters independently or at the same time. The method may provide for improved fuel vapor processing under some conditions.

Abstract: A system and method for improving emissions of an engine capable of combusting a multi-component fuel comprised of two or more fuels is presented. According to the method, the passage exhaust gases are processed in said exhaust system is determined in part from the concentration of one component fuel.

Abstract: A method for controlling engine temperature of an engine with a wide dynamic range is disclosed. In one example, the derivative of an engine temperature is assessed by a controller. The controller may adjust engine actuators to limit engine temperature in response to the derivative.

Abstract: Evaporative emissions management for a vehicle having a fuel tank and a low-vacuum internal combustion engine, including hybrid electric vehicles, include first and second canisters with the second canister disposed between the first canister and atmosphere. A refueling valve routes fuel vapors from the fuel storage tank through the first canister, and to the second canister when the first canister becomes saturated, during refueling. Other than during refueling, the refueling valve is closed to route fuel vapors around the first canister and directly into the second canister. First and second purge valves are controlled during canister regeneration or purging so air from atmosphere is routed primarily through the second canister to the engine to purge the second canister before the purge valves are operated to route air from atmosphere through both the second and first canisters to purge the first canister.

Abstract: Evaporative emissions management for a vehicle having a fuel tank and a low-vacuum internal combustion engine, including hybrid electric vehicles, include first and second canisters with the second canister disposed between the first canister and atmosphere. A refueling valve routes fuel vapors from the fuel storage tank through the first canister, and to the second canister when the first canister becomes saturated, during refueling. Other than during refueling, the refueling valve is closed to route fuel vapors around the first canister and directly into the second canister. First and second purge valves are controlled during canister regeneration or purging so air from atmosphere is routed primarily through the second canister to the engine to purge the second canister before the purge valves are operated to route air from atmosphere through both the second and first canisters to purge the first canister.

Abstract: A system and method for improving emissions of an engine capable of combusting a multi-component fuel comprised of two or more fuels is presented. According to the method, the passage exhaust gases are processed in said exhaust system is determined in part from the concentration of one component fuel.