Daily dynamometer readiness verification.

§ 1066.275 Daily dynamometer readiness verification.

(a) Overview. This section describes how to verify that the dynamometer is ready for emission testing.

(b) Scope and frequency. Perform this verification upon initial installation, within 1 day before testing, and after major maintenance. You may run this within 7 days before testing if you accumulate data to support a less frequent verification interval.

(c) Procedure. For dynamometers that have an automated process for this verification procedure, perform this evaluation by setting the initial speed and final speed and the inertial and road-load coefficients as required for the test, using good engineering judgment to ensure that these values properly represent in-use operation. Use the following procedure if your dynamometer does not perform this verification with an automated process:

This document is only available to subscribers. Please log in or purchase access.