| 摘要 |
PURPOSE:To evaluate objectively an indicated mean effective pressure by providing a pressure sensor, a cylinder internal capacity change operating means, a multiplying means, etc. CONSTITUTION:Manometers 1-4 are connected to A/D converters 9-12 through amplifiers 5-8 respectively, and analog signals are converted to digital signals. A synchronizing signal generator 13 is provided, and the pulse signal from this generator 13 is inputted to a timing control circuit 14. The pulse train signal from a crank angle detector 15 is inputted to the circuit 14 also and is converted to a clock signal by the circuit 14 and is inputted to cylinder internal capacity change operators 16 and 17. The circuit 14 receives the pulse signal from the generator 13 to generate pulse signals successively and inputs them to operators 16 and 17 and a switch 18. Output signals from operations 16 and 17 and output signals from A/D converters 9 and 12 or A/D converters 10 and 11 are multiplied by multipliers 20-23, and signals having product information are outputted in real time. |
