มอก. 1725-2541

Scope (English)

This standard specifies a test method for the measurement of exhaust gas opacity from compression ignition (diesel) engined vehicles. It describes the measurement of exhaust opacity under quasi-steady conditions at a single speed at full load, and is designed to ensure a correlation with measurement under steady-state conditions. This standard applies to compression-ignition (diesel) engined road vehicles. It is not intended to cover agricultural tractors and special vehicles for use in civil engineering.