Abstract: A vent system for a dryer, may include an exhaust air conduit configured to provide an airstream to a dryer; a sensor within the conduit and configured to measure the airstream; and a controller configured to receive sensor data from the sensor and determine an airflow. A method for detecting a variation in airflow through a vent of a dryer may include receiving sensor data from at least one sensor in an air conduit of a clothes dryer; determining an estimated airflow based on the sensor data; comparing the estimated airflow to a predetermined expected airflow; and adjusting the estimated airflow in response to the estimated airflow not being within a predefined margin of the predetermined expected airflow.

Abstract: Detection of airflow conditions, such as blockage issues, in a dryer laundry appliance is provided. A current or instant calibration is performed utilizing an airflow model to infer, based on current or instant sensor data from sensors of the dryer laundry appliance, an estimated airflow for an exhaust air conduit of the dryer laundry appliance. The estimated airflow is compared to a baseline airflow previously inferred by the airflow model during a baseline calibration using previous sensor data from the sensors of the dryer laundry appliance. An alert is provided responsive to the estimated airflow being below a threshold level relative to the baseline airflow.

Abstract: A system for actuating sequential engine function transducers such as fuel injector solenoids comprising a plurality of switch nodes equal in number to the number of cylinders of the engine. Each switch node includes a high current switch such as a transistor and an individually addressable driver circuit for causing the transistor to conduct when an address unique to the driver is received. The nodes are preferably disposed in close physical proximity to the injector solenoids. Low current address carrying lines are connected between the address generator and the individual switch drivers to activate them in sequence. Only a single high voltage high current supply line need be provided. The transducers may also be intake and/or exhaust valve actuators or spark ignition devices.