A method for diagnosing a lack of engine oil includes determining, by a controller, whether an oil level of an engine is normalized from an insufficient state to a normal state using an oil level switch. When it is determined that the oil level is normalized to the normal state, a driving mode of a vehicle is confirmed. When it is confirmed that the driving mode of the vehicle is an engine off driving mode, a diagnosis of the oil level is stopped.

The present disclosure provides systems and methods for monitoring and correcting a condition of an engine. A system for monitoring an engine comprises a plurality of sensors each coupled to a cylinder of the engine and configured to detect pressure data from each cylinder, a controller coupled to the sensors and configured to receive the pressure data and a monitor coupled to the controller for displaying the pressure data. The controller comprises a processor and a computer-readable data storage device. The storage device stores program instructions that, when executed by the processor, stores the pressure data captured by the controller and parses or combines this data into at least one parameter that represents the condition of the engine and/or summarizes one or more issues that may affect engine performance. This provides valuable information to the user(s) in real time, allowing the user(s) to make immediate correction actions to the engine.

An engine device includes an engine, an exhaust gas purification device arranged on an exhaust path of the engine, and an engine control device that controls drive of the engine. The engine control device executes a plurality of regeneration controls with which particulate matter accumulated in the exhaust gas purification device is combusted and removed. As the plurality of regeneration controls, at least non-work regeneration control, in which an exhaust gas temperature is raised in combination of post-injection and a predetermined high rotational speed, is included. The engine control device drives the engine so as to solely combust and remove the particulate matter in the non-work regeneration control and compulsorily executes isochronous control in which a rotational speed of the engine is maintained constant, irrespective of variation in load of the engine.

An object of the present invention is to provide a working machine and a working machine monitoring system using the same which is capable of improving the accuracy in determining fuel property. The working machine is provided with an engine operation parameter acquisition module (1041) that acquires an engine operation parameter representing the operation state of an engine mounted on the working machine; a refueling time acquisition module (1011) that acquires a refueling time when the working machine is supplied with fuel; and a fuel property determination module (1014) that determines the property of the fuel based on a comparison result of the time when the engine operation parameter changes, with the refueling time.

A starter device for a work machine may include a ring switch surrounding a housing. The ring switch may be rotatable between a first ring position and a second ring position. A push button may be surrounded by the housing and may be operatively engageable between a first button position and a second button position within the housing. A controller may be in communication with the ring switch and the push button. The controller may be configured to start a prime mover of the work machine when the ring switch is in the second ring position and the push button is operatively engaged from the first button position to the second button position. The controller may be configured to stop the prime mover using delayed shutdown when the ring switch is rotated from the second ring position to the first ring position.

In a backhoe comprising: a diesel engine able to increase a speed due to an accelerating operation; an exhaust gas cleaning device having a DPF for catching a particulate matter included in an exhaust gas exhausted from the diesel engine; and a filter regeneration means to combust and remove the particulate matter deposited in the DPF of the exhaust gas cleaning device, the filter regeneration means requires to increase the speed of the diesel engine during an automatic regeneration for automatically combusting and removing the particulate matter deposited in the DPF. In this manner, a working machine able to require an operator to increase the speed of the diesel engine at appropriate timing, in order to increase a temperature of the exhaust gas to a temperature required for regeneration of the DPF can be provided.

Methods and systems are provided for detecting hydrocarbon ingestion into an engine based on the simultaneous monitoring of cylinder imbalance and an elevated exhaust exotherm. Crankshaft acceleration data is monitored during steady-state and transient engine conditions while exhaust temperatures are estimated during non-regeneration conditions. Engine speed and load is limited to reduce further hydrocarbon ingestion.

Methods and systems are provided for detecting leaks in a diesel particulate filter (DPF). In one example, a faster leak detection routine may be performed during a single drive cycle to detect large leaks in the DPF. However, if there are no large leaks in the DPF, a slower leak detection may be performed over a plurality of drive cycles, to detected smaller leaks in the DPF.

Systems, methods and apparatus for controlling operation of dual fuel engines are disclosed that regulate the fuelling amounts provided by a first fuel and a second fuel during operation of the engine. The first fuel can be a liquid fuel and the second fuel can be a gaseous fuel. The fuelling amounts are controlled to improve operational outcomes of the duel fuel engine.

A control system for use in a fluid flow application includes a heater and a control device. The heater includes at least one resistive heating element having a relationship between resistance and temperature defining a non-monotonic curve. The heater is to heat fluid flow. The control device is to determine a flow characteristic of the fluid flow and a temperature of the at least one resistive heating element along the non-monotonic curve between resistance and temperature based on a change in resistance of the at least one resistive heating element.