CS-E 300 Conditions Applicable to All Tests

(a)Coolant Flow. (Applicable to liquid-cooled Engines only). Equipment must be provided to permit simultaneous observation of the coolant flow to each bank of cylinders.

(b)Cylinder Temperatures. (Applicable to air-cooled Engines only). Cylinder temperature observations must be made on all cylinders throughout the Rating Checks, Detonation, Endurance and Calibration Tests. The location of the point(s) at which the temperature of each cylinder is measured must be recorded.

(c)Temperatures – General. Except as prescribed in CS-E 300(d) and (e), the temperatures must be held throughout each stage, within the limits given in Table 1, to the values declared as the maxima appropriate to the power, where that power is a limiting condition. TABLE 1

(d)Temperatures – At High Powers

(1)For the stages in which the Engine is run at Maximum Continuous Power, the limits of CS-E 300(c) apply to 50% of the total running period of each stage; the remaining 50% of the period must be run at not less than the Maximum Best Economy Cruising temperatures.

(2)For the stages in which the Engine is run at Take-off Power for not less than 1 hour continuously, the limits of CS-E 300(c) apply to a continuous period of not less than 15 minutes in each hour only, during which at least one full set of observations must be taken; the remainder of each hour must be run at not less than the Maximum Best Economy Cruising temperatures.

(3)The limits of CS-E 300 (c) are not applicable to stages in which the Engine is run for less than 15 minutes continuously at any one power.

(e)Temperature - Calibrations Tests. For the power performance items of the calibration tests in CS-E 350, the limits of CS-E 300(c) must apply except that the declared temperature may be obtained and set at the commencement of each curve and thereafter be left unadjusted, provided that the temperatures do not vary appreciably from those declared.

(f)Torque Measurement - For testing requiring the measurement of Engine power, an acceptable method of establishing the torque of the Engine shall be defined. (See AMC E 300(f))

[Amdt. No.: E/1]