Abstract: An evaporative emissions (EVAP) system for an engine of a vehicle includes an ion sensing system configured to measure a fuel/air ratio (FAR) within cylinders of the engine and a controller configured to, during an engine cold start period, perform open-loop lambda control of the engine including obtaining, from the ion sensing system, the measured FAR within the cylinders of the engine, comparing the measured FAR within the cylinders of the engine to a target FAR within cylinders of the engine, and based on the comparing, adjusting operation of at least one of the EVAP system and fuel injectors of the engine to maintain a stoichiometric operation of the engine, wherein the use of the ion sensing system for open-loop lambda control of the engine eliminates the need for a hydrocarbon (HC) sensor in the EVAP system.

Abstract: An evaporative emissions (EVAP) system for an engine of a vehicle includes an ion sensing system configured to measure a fuel/air ratio (FAR) within cylinders of the engine and a controller configured to, during an engine cold start period, perform open-loop lambda control of the engine including obtaining, from the ion sensing system, the measured FAR within the cylinders of the engine, comparing the measured FAR within the cylinders of the engine to a target FAR within cylinders of the engine, and based on the comparing, adjusting operation of at least one of the EVAP system and fuel injectors of the engine to maintain a stoichiometric operation of the engine, wherein the use of the ion sensing system for open-loop lambda control of the engine eliminates the need for a hydrocarbon (HC) sensor in the EVAP system.

Abstract: In accordance with an aspect of the present disclosure, cruise control of an automotive vehicle in a fuel economy cruise control mode controls vehicle speed to be within a fuel economy speed band about a cruise control set speed so that instantaneous fuel economy is at least equal to average fuel economy.

Abstract: A Venturi-based purge vapor supply system for a turbulent jet ignition (TJI) engine and its method of operation utilize an air compressor configured to output pressurized air, a vapor canister configured to store purge vapor evaporated from liquid fuel housed in a fuel tank, a purge vapor injector configured to inject a mixture of air and purge vapor into a pre-chamber of the TJI engine and an ejector tee connected between the air compressor, the vapor canister, and the purge vapor injector, the ejector tee having a Venturi-based design such that the pressurized air from the air compressor draws the purge vapor into the ejector tee and combines the air and the purge vapor to form and output the mixture of air and purge vapor to the purge vapor injector.

Abstract: A diagnostic system and method for a gasoline particulate filter (GPF) of an exhaust system of a vehicle comprise at least one heater associated with at least one oxygen (O2) sensor disposed proximate to the GPF in the exhaust system and a controller configured to determine a status of the GPF based on a duty cycle of the at least one O2 sensor heater and, based on the determined status of the GPF, detect a malfunction of the GPF or whether to regenerate the GPF.

Abstract: A Venturi-based purge vapor supply system for a turbulent jet ignition (TJI) engine and its method of operation utilize an air compressor configured to output pressurized air, a vapor canister configured to store purge vapor evaporated from liquid fuel housed in a fuel tank, a purge vapor injector configured to inject a mixture of air and purge vapor into a pre-chamber of the TJI engine and an ejector tee connected between the air compressor, the vapor canister, and the purge vapor injector, the ejector tee having a Venturi-based design such that the pressurized air from the air compressor draws the purge vapor into the ejector tee and combines the air and the purge vapor to form and output the mixture of air and purge vapor to the purge vapor injector.

Abstract: In accordance with an aspect of the present disclosure, cruise control of an automotive vehicle in a fuel economy cruise control mode controls vehicle speed to be within a fuel economy speed band about a cruise control set speed so that instantaneous fuel economy is at least equal to average fuel economy.

Abstract: An evaporative emissions (EVAP) control system for a vehicle includes a purge pump configured to pump fuel vapor to a direct injection (DI) engine of the vehicle via a vapor line and a purge valve and a hydrocarbon (HC) sensor disposed configured to measure an amount of HC in the fuel vapor. The system also includes a controller configured to detect an HC vapor supply condition indicative of an operating condition of the Di engine where engine vacuum is less than an appropriate level for delivering the fuel vapor to the DI engine via the vapor line; and in response to detecting the HC vapor supply condition, controlling at least one of the purge pump and the purge valve, based on the measured amount of HC, to deliver a desired amount of fuel vapor to the DI engine to decrease particulate matter (PM) produced by the DI engine.

Abstract: An exhaust gas flow concentration system for a catalyst includes an inlet that receives a flow of exhaust gas from an exhaust pipe of an exhaust system, a stationary tube in communication with the inlet and disposed upstream from the catalyst, and an extension tube in communication with the stationary tube and disposed upstream from the catalyst, where the extension tube includes a cross-sectional area less than a cross-sectional area of the catalyst. A displacement device is coupled to the extension tube and is configured to (i) displace the extension tube relative to the stationary tube downstream towards the catalyst as a temperature in the exhaust system decreases away from a light-off temperature of the catalyst and (ii) retract the extension tube relative to the stationary tube upstream away from the catalyst when the temperature in the exhaust system reaches the light-off temperature of the catalyst.

Abstract: An exhaust gas flow concentration system for a catalyst includes an inlet that receives a flow of exhaust gas from an exhaust pipe of an exhaust system, a stationary tube in communication with the inlet and disposed upstream from the catalyst, and an extension tube in communication with the stationary tube and disposed upstream from the catalyst, where the extension tube includes a cross-sectional area less than a cross-sectional area of the catalyst. A displacement device is coupled to the extension tube and is configured to (i) displace the extension tube relative to the stationary tube downstream towards the catalyst as a temperature in the exhaust system decreases away from a light-off temperature of the catalyst and (ii) retract the extension tube relative to the stationary tube upstream away from the catalyst when the temperature in the exhaust system reaches the light-off temperature of the catalyst.