AMC E 300(f) Conditions Applicable to all Tests - Torque Measurement

In establishing an acceptable method for determination of the Engine torque, consideration should be given to the following:

(1)Where a method of direct Engine torque measurement is to be used, the overall accuracy of the torque measurement system should be determined.

(2)Where no direct means for measuring Engine torque is available, an appropriate method for establishing the torque will be needed.

(a)Normally this requires the use of suitable Engine parameters (e.g. power setting, and Engine speed) to correlate the Engine torque measured on a dynamometer with the Engine torque achieved in the test configuration.

(b)The correlation should take into account any effect due to environmental changes (e.g. temperature, humidity, ambient pressure) and of test bench configuration changes (e.g. air inlet, exhaustand engine cooling system differences between the dynamometer installation and the test configuration).

(c)The overall accuracy of the method used for determining Engine torque should be determined.

[Amdt. No.: E/1]