摘要:
An object of the present invention is to enable accurate detection of abnormality in a fuel property sensor that is used to determine properties of a fuel employed in an internal combustion engine whose operation is controlled in accordance with the properties of the employed fuel, or more particularly, enable accurate detection on whether the fuel property sensor is stuck. In order to achieve the above object, the present invention provides an abnormality detection device in which the fuel property sensor is not disposed in a primary flow path of a fuel flow path connecting a fuel pump to an injector, but is disposed in a branch flow path which is such that there is a time where the fuel in the branch flow path drops out therefrom between one start of the internal combustion engine and the next start. An output value of the fuel property sensor generated when the fuel is flowing through the branch flow path is acquired as a first sensor output value. An output value of the fuel property sensor generated when the fuel in the branch flow path drops out therefrom is acquired as a second sensor output value. The first sensor output value and the second sensor output value are used as judgment data to judge whether the fuel property sensor is abnormal.
摘要:
A diagnosis device for a turbocharger, the diagnosis device includes an electronic control unit (25). The electronic control unit is configured to calculate a turbine expansion ratio (PIT) as a ratio of a pressure of the exhaust gas flowing into a turbine (19) of the turbocharger to the pressure of the exhaust gas flowing out from the turbine (19); operate a deterioration evaluation value toward a predetermined one of an increase side and a decrease side when the turbine expansion ratio (PIT) exceeds a threshold (α); and determine a replacement timing of a turbine component (19a) when a total operation amount of the deterioration evaluation is equal to or larger than a specified value, the total operation amount being an operation amount from an initial value of the deterioration evaluation value.
摘要:
An induction cleaning analyzing system includes a pressure sensor, an ignition event detector, and a control module. The pressure sensor measures airflow pressures of intake air and/or exhaust from cylinders in a common airflow pathway of a vehicle. The ignition event detector determines ignition events of the cylinders. The control module obtains pressure waveforms representative of the airflow pressures and divides the pressure waveforms into waveform segments. The control module associates different subsets of the waveform segments with different ones of the cylinders using the ignition events. The control module also identifies cyclic variations in the airflow pressures flowing in the common airflow pathway and caused by at least one of the cylinders by examining the waveform segments associated with the at least one of the cylinders.
摘要:
An abnormality detection apparatus (100) for a Rankine cycle system (1) includes: a main body (20) that vaporizes a cooling medium that circulates in an internal combustion engine (2) by giving waste heat to the cooling medium; a gas-liquid separator (5) that separates the cooling medium into a gas-phase and a liquid-phase; a superheater (7) that gives waste heat of the engine (2) to the cooling medium; a condensate header tank (15) that stores the liquid-phase cooling medium; a vane pump (10) that pumps the liquid-phase cooling medium. If abnormality of a cooling medium supply portion that supplies the cooling medium to the engine (2) is not detected, the abnormality detection apparatus determines whether a vane pump (10) has abnormality on the basis of the amount of the liquid-phase cooling medium in the gas-liquid separator (5), the temperature of the gas-phase cooling medium in the superheater (7) and the amount of the liquid-phase cooling medium in the condensate header tank (15).
摘要:
The invention relates to a method and device for diagnosing a switchable coolant pump (2) for circulating a coolant in a coolant circuit (3) of an internal combustion engine (1), wherein an actual value of the cylinder head temperature (19) of the internal combustion engine (1) is detected and wherein the actual value of the cylinder head temperature (19) is compared with a model value of the cylinder head temperature (26) and the functionality of the coolant pump (2) is assessed according to the comparison result (29) or (30).
摘要:
A system for analysing the condition of a machine having a rotating shaft (8) and a measuring point (12); the system comprising a client part connectable to a communications network (18) for communication with a supplier part (20); said client part comprising:at least one sensor (10) attachable on or at said measuring point (12) for generating said measurement data dependent on rotation of said shaft;an analysis apparatus (14) for analysing the condition of the machine on the basis of said measurement data; said analysis apparatus (14) having a data processing means for processing condition data dependent on said measurement data; said data processing means comprising means for performing a plurality of condition monitoring functions (F1, F2, Fn); and a logger for registering use of at least one of said condition monitoring functions (F1, F2,Fn); a communication port (16) coupled to said data processing means and connectable to said communications network (18) for communication with said supplier part computer (20); user input/output interface (102, 106, 103, 182) coupled to said data processing means for enabling user interaction; means (50, 60, 70, 80, 132) for generating a request for an amount of usage of at least one of said condition monitoring functions (F1, F2, Fn).
摘要:
An apparatus for analysing the condition of a machine having a rotating shaft, comprising: at least one input for receiving measurement data from a sensor for surveying a measuring point of the machine; said measurement data being dependent on rotation of said shaft; data processing means for processing condition data dependent on said measurement data; said data processing means comprising means for performing a plurality of condition monitoring functions (F1, F2, Fn), wherein said data processing means includes a Field Programmable Gate Array circuit coupled to said at least one input.
摘要:
An apparatus for analysing the condition of a machine, comprising: at least one input for receiving measurement data from a sensor for surveying a measuring point of the machine; data processing means for processing condition data dependent on said measurement data; said data processing means comprising means for performing a plurality of condition monitoring functions (F1, F2, Fn); anda logger for registering use of at least two of said condition monitoring functions (F1, F2, Fn); wherein said logger is adapted to register use of a first condition monitoring function a first rate; and said logger is adapted to register use a second condition monitoring function at a second rate.