摘要:
Methods and systems are provided for opportunistic regeneration of a diesel particulate filter based on cloud based traffic information and navigation information. In one example, a method may include determining initiation of regeneration, termination of regeneration and a degree of regeneration based on information from a lead vehicular network and navigation information in order to reduce a regeneration fuel penalty.
摘要:
A system for improving operation of an engine having a particulate matter sensor is presented. The system may be used to improve engine operation during cold starts especially under conditions where water vapor or entrained water droplets are present in vehicle exhaust gases. In one embodiment, particulate sensor degradation is indicated in response to an output of said particulate matter sensor staying below a threshold as engine temperature increases past the dewpoint temperature.
摘要:
Methods and systems are provided for opportunistic regeneration of a diesel particulate filter based on cloud based traffic information and navigation information. In one example, a method may include determining initiation of regeneration, termination of regeneration and a degree of regeneration based on information from a lead vehicular network and navigation information in order to reduce a regeneration fuel penalty.
摘要:
A method for controlling a particulate matter sensor heater is provided. The method includes operating the heater to burn-off soot accumulated on the sensor; and adjusting the heater level based on sensor output generated during the heater operation. In this way, improved heater control can be achieved using the sensor output already available.
摘要:
Methods and systems for operating an engine that includes an after treatment system are described. In one example, traffic data and navigation system data are a basis for deciding whether or not to increase heat output of an engine to ensure operation of the after treatment system. In particular, one or more actuators may be adjusted to minimize fuel consumption and/or reduce feedgas emissions while generating sufficient heat to maintain after treatment system operation.
摘要:
A system for improving operation of an engine having a particulate matter sensor is presented. The system may be used to improve engine operation during cold starts especially under conditions where water vapor or entrained water droplets are present in vehicle exhaust gases. In one embodiment, particulate sensor degradation is indicated in response to an output of said particulate matter sensor staying below a threshold as engine temperature increases past the dewpoint temperature.
摘要:
A method for controlling a particulate matter sensor heater is provided. The method includes operating the heater to burn-off soot accumulated on the sensor; and adjusting the heater level based on sensor output generated during the heater operation. In this way, improved heater control can be achieved using the sensor output already available.
摘要:
A method for diagnosing a particulate matter sensor is described. In one example, a liquid is purposefully injected into the exhaust system to verify operation of the particulate matter sensor. Reliability of particulate matter diagnostics may be improved by way of the approach, at least during some conditions.
摘要:
Systems and methods for providing electric energy to an electrically heated catalyst are described. In one example, the electrically heated catalyst may be a three phase device with heating elements that are arranged in a delta configuration. In other examples, the electrically heated catalyst may include a single heating element.
摘要:
A method for diagnosing a particulate matter sensor is described. In one example, a liquid is purposefully injected into the exhaust system to verify operation of the particulate matter sensor. Reliability of particulate matter diagnostics may be improved by way of the approach, at least during some conditions.