A fuel tank containing a fuel and oil mixture is managed to determine if the fuel and oil mixture contains the correct ratio for a motor. The fuel tank containing a fuel and oil mixture is monitored. A fuel to oil ratio is selected for the motor. A combined viscosity of the fuel and oil mixture is calculated with respect to the fuel to oil ratio, and the temperature of the fuel and oil mixture. The combined viscosity is used to determine a predetermined range of the combined viscosity. The viscosity of the fuel and oil mixture within the fuel tank is measured as a measured viscosity. If the measured viscosity of the fuel and oil mixture does not correspond with the predetermined range, then a user may be alerted that the measured viscosity does not correspond with the predetermined range.

A method of testing the proper functioning of a catalyzed particulate filter of an internal combustion engine during regeneration of the catalyzed particulate filter is disclosed. A first value of an oxygen concentration in an exhaust gas upstream of the catalyzed particulate filter and a second value of an oxygen concentration in the exhaust gas downstream of the catalyzed particulate filter is measured during regeneration. The difference between the first value and the second value is calculated and a malfunctioning of the catalyzed particulate filter is indicated when the calculated difference is below a predetermined threshold value thereof.

The present invention discloses methods and systems for problem-alert aggregation and identifying sub-optimal behavior. Methods include the steps of: providing data-driven alerts for an asset, wherein the data-driven alerts associate real-world data measured and/or detected from the asset, and wherein entities are physical objects and/or processes; providing an asset representation including interrelations between the objects, processes, and sensors associated with the entities of the asset; associating the data-driven alerts with the respective entities which are interrelated in the asset representation; aggregating the data-driven alerts into events, wherein the events are groupings of related data-driven alerts having related entities according to the asset representation; scoring each event into an event score, wherein the event score represents an event importance, an event urgency, an event relevance, and/or an event significance; and generating a selected subset of the events and respective event scores, wherein the selected subset is based on the event scores.

Methods and systems are provided for determining a type of spark plug fouling. In one example, a method may include differentiating spark plug fouling due to soot accumulation from spark plug fouling due to fuel additive accumulation based on a current on a control wire of the spark plug following application of a dwell command. Further, exhaust oxygen sensor degradation and/or exhaust catalyst degradation may be determined based on switching frequencies of one or more exhaust oxygen sensors and the type of spark plug fouling.

Systems and methods for wireless control of welding power supplies are disclosed. An example welding power supply includes: a housing comprising a control panel configured to receive inputs from an operator; power conversion circuitry configured to convert input power into output power for a welding operation; and local control circuitry configured to wirelessly receive a control signal from remote control circuitry of a portable electronic device, and to control the welding power supply based on the received control signal; wherein the local control circuitry is configured to set prioritization of control of the welding power supply between the portable electronic device and the control panel of the welding power supply, prevent the control panel from controlling a parameter of the welding power supply when the portable electronic device is prioritized, and prevent the portable electronic device from controlling the parameter when the control panel is prioritized.

A method for recognizing a state change of a fuel injector of an internal combustion engine, in which fuel from a high-pressure accumulator is injected into a combustion chamber with the aid of the fuel injector. A value that is representative of a static flow rate of fuel through the fuel injector is ascertained. A state change of the fuel injector is deduced when the representative value differs from a comparative value by more than a first threshold value.

A method and system for initiating regeneration of a diesel particulate filter (DPF) within a diesel engine system comprising the DPF, a data link connector (DLC), and an electronic control unit (ECU) such as an engine control unit includes an engine communication interface (ECI) device and a communication device that request and transmit DPF inhibit parameters that indicate whether initiation of regeneration of the DPF can be performed. The ECI device can comprise two connectors that are connectable to different types of DLC. The communication device can comprise a smart-phone. The ECI device can determine which DPF inhibit parameter are to be requested from the ECU and which vehicle communication protocol is required to communicate with the ECU. The communication device can receive the DPF inhibit parameters, determine whether initiation of regeneration of the DPF can be performed, and transmit a communication to request initiation of regeneration of the DPF.

A powertrain arrangement for use with additized Dimethyl Ether (DME) fuel, the additized DME comprising DME and a lubricity additive, is provided. The powertrain arrangement includes a powertrain comprising an engine adapted for use with the additized DME fuel, a fuel tank, a conductivity sensor in the fuel tank; the conductivity sensor being arranged to transmit a signal, corresponding to a conductivity of fuel in the fuel tank, a temperature sensor in the fuel tank, the temperature sensor being arranged to transmit a signal corresponding to a temperature of the fuel in the fuel tank, and a controller configured to receive and process the conductivity signal and the temperature signal and to send a control signal to control functioning of the powertrain in response to the conductivity signal and the temperature signal. A measuring apparatus and method are also provided.

Provided is a control system (1) for a hybrid vehicle (8) which is configured to directly transmit an output of an internal combustion engine (2) to a driven wheel (17) via a lockup clutch (18) and transmit an output of an electric motor is to the driven wheel by disengaging the lockup clutch depending on an operating state of the vehicle. The control system is configured to activate a warning unit (36, 37) when the oil pressure is below a prescribed oil pressure threshold value and the rotational speed of the engine detected by the rotary encoder is higher than a rotational speed threshold value. The rotational speed threshold value is a first threshold value when the lockup clutch is fully disengaged, and a second threshold value higher than the first threshold value when the lockup clutch is fully engaged, being engaged and being disengaged.

An internal combustion engine system includes a first set of cylinders, a second set of cylinders, exhaust manifolds, and exhaust gas sensors. The first set of cylinders has first and second subsets of cylinders. The second set of cylinders has third and fourth subsets of cylinders. The exhaust manifolds have primary conduits, secondary conduits branching from the primary conduits, and tertiary conduits branching from the secondary conduits. The tertiary conduits associated with each of the secondary conduits are connected to one of the first, second, third, or fourth subsets of cylinders. The exhaust gas sensors are disposed within each of the secondary conduits and are each configured to measure air-to-fuel ratios of one of the first, second, third, or fourth subsets of cylinders.