초록 ▼

The maximum pressure in a cylinder of an internal combustion engine is measured by a device which includes a pressure transducer housed in a water cooled, tubular body, one end of which can be connected to an engine indicator cock, and the other end of which is provided with a handle containing the

The maximum pressure in a cylinder of an internal combustion engine is measured by a device which includes a pressure transducer housed in a water cooled, tubular body, one end of which can be connected to an engine indicator cock, and the other end of which is provided with a handle containing the transducer leads. The signal from the transducer is fed through signal conditioning and amplification, peak detector and comparator devices to a microprocessor which provides a visual, numerical indication of peak engine firing pressure.

대표청구항 ▼

A device for measuring the pressure in a cylinder of an internal combustion engine comprising a body; inlet means in said body; connector means on said body for connecting said inlet means to an internal combustion engine to place the inlet means and hence the body in fluid communication with a cyli

A device for measuring the pressure in a cylinder of an internal combustion engine comprising a body; inlet means in said body; connector means on said body for connecting said inlet means to an internal combustion engine to place the inlet means and hence the body in fluid communication with a cylinder of the engine; pressure transducer means in said body for producing an electrical pressure signal dependent on the pressure in said cylinder; cooling means integral with said body for cooling the body, said cooling means comprising fins on said body, a liquid container carried by said body surrounding said fins, and a vent tube in said container connecting the interior of the container to the atmosphere; and means for connecting said transducer means to an indicator circuit for receiving said electrical pressure signal and providing an indication of cylinder pressure.