SYSTEMS AND METHODS FOR CONTROLLING FUEL VAPOR CANISTER PURGING OPERATIONS

    公开(公告)号:US20200217260A1

    公开(公告)日:2020-07-09

    申请号:US16239440

    申请日:2019-01-03

    发明人: Aed Dudar

    IPC分类号: F02D41/04 F02D41/00

    摘要: Methods and systems are provided for increasing an efficiency of a purging operation of a fuel vapor storage canister of a vehicle, the fuel vapor storage canister configured to capture and store fuel vapors stemming from a fuel tank of the vehicle. As one example, a method comprises reactivating one or more cylinders of an engine during a purging operation, in response to an indication that the purging of stored fuel vapors from the fuel vapor storage canister is compromised as a result of fuel vaporization stemming from the fuel tank. In this way, the canister may be effectively cleaned even under high fuel vaporization circumstances, which may improve fuel economy and may reduce release of undesired evaporative emissions to atmosphere.

    Exhaust purification system and catalyst regeneration method

    公开(公告)号:US10690073B2

    公开(公告)日:2020-06-23

    申请号:US15555448

    申请日:2016-02-25

    摘要: An exhaust purification system includes: an NOx reduction type catalyst; an MAF sensor; an SOx purge control unit that uses an air system control having an intake air amount feedback-controlled based on a target intake air amount and an injection system control for a target injection increase amount set based on the target intake air amount, and a fuel injection amount feedback-controlled based on the target injection increase amount; an SOx purge prohibition processing unit that prohibits an SOx purge control; and a warming mode control unit that open-loop controls an air system when the SOx purge control is prohibited, controls the fuel injection amount, and maintains the exhaust gas at a temperature. The SOx purge control unit executes the injection system control by switching the target intake air amount into an actual intake air amount when starting the SOx purge control after a warming mode control is ended.

    Control device and method for diesel engine
    97.
    发明授权

    公开(公告)号:US10669966B2

    公开(公告)日:2020-06-02

    申请号:US16156865

    申请日:2018-10-10

    摘要: The silence of a diesel engine is enhanced. A PCM detects an actual supercharging pressure of a gas, and controls an injection mode of a fuel through an injector, thereby executing main injection that is started near a compression top dead center or pilot injection that is executed prior to the main injection depending on an operating state of an engine. If the degree of opening of an accelerator pedal decreases during operation of a large turbocharger, and the actual supercharging pressure is equal to or higher than a predetermined value, the PCM executes cylinder pressure control that allows an interval between a start timing of the pilot injection and a start timing of the main injection to be broader than if the actual supercharging pressure is less than a predetermined value.

    Engine control device
    98.
    发明授权

    公开(公告)号:US10669955B2

    公开(公告)日:2020-06-02

    申请号:US16065225

    申请日:2016-12-22

    摘要: An engine includes a dynamo-electric machine which generates electricity by the rotation of the engine; a secondary battery which stores electricity generated by the dynamo-electric machine; an electric supercharger including an electric compressor for supercharging intake air into combustion chambers; and a mechanical supercharger including an exhaust turbine configured to be driven by exhaust gas in the exhaust passage, and a mechanical compressor configured to supercharge intake air into the combustion chamber. An ECU (50) includes a remaining charge detector for detecting the remaining amount of charge of the secondary battery; and a supercharge control means for adjusting the ratio between a supercharging pressure by the electric supercharger and a supercharging pressure by the mechanical supercharger according to the remaining amount of charge of the secondary battery.