A method of determining the viscosity of an operating liquid, such as engine oil, in an internal combustion engine uses a sensor having a measuring chamber for determining the liquid level and its variation. The measuring chamber is connected via a damping device to a reservoir of the operating liquid. On starting the internal combustion engine, the variation in the liquid level is measured in the measuring chamber of the sensor and the variation of the level over time is used as a measure for determining the viscosity.

Method for determining the viscosity of an operating liquid of an internal combustion engine

The method involves determining the viscosity of liquid and ultrasound travel time in liquid. Based on determination result, the information on concentration and load of cleaning agent in liquid is obtained. An Independent claim is also included for a measuring device for cleaning agent concentration.

Investigation process of cleaning agent concentration in liquid such as oil, involves determining viscosity of liquid and ultrasound travel time in liquid for cleaning agent concentration determination

of EP1262760The oil level in an oil sump during traveling and the transverse acceleration of the vehicle are measured and then analyzed to output a pair of signals. The ratio between the two signals is computed based on comparing one of the signal with a threshold value. The mean value of several ratios corresponds to the viscosity of the oil.

Method for determining the viscosity of a working fluid of a combustion engine

The viscometer includes a container (1), an overflow pipe (2), and a flowmeter (3). The filling height in the container is maintained at a constant height. The flowmeter measures the flow value which is dependent only on the viscosity. Hence it is possible to infer the viscosity directly from the flow speed.

Viscometer for measuring liquid viscosity includes a container, an overflow pipe, and a flowmeter such that filling height in the container is maintained at a constant height

The arrangement for measuring the viscosity of liquids contains a throughflow vessel (1) with temp. controlled heating (3) and is associated with a throughflow time measurement. A light barrier (8) associated with the outlet (9) of the vessel is used to control a time counter. The opening of the throughflow vessel can be opened depending on a lifting magnet (11) activated at a predefined temp.. The vessel can have an overflow and a light barrier level monitoring arrangement. USE/ADVANTAGE - E.g. for monitoring viscosity of oil e.g. for hydraulic press. Eliminates certain inaccuracies associated with conventional ones, thus reducing number of unnecessary oil changes.

Liquid viscosity measurement arrangement for oil - contains throughflow vessel with temp. controlled heating, light barriers and aperture control lifting magnet

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Liquid viscosity measurement arrangement for oil - contains throughflow vessel with temp. controlled heating, light barriers and aperture control lifting magnet