This SAE Standard establishes the test procedure@ environment@ and instrumentation for determining the exterior sound level for passenger cars@ multipurpose vehicle@ and light trucks having a gross vehicle mass (weight) rating of 4540 kg (10 000 lb) or less. The test procedure of this standard is characterized by having fixed initial conditions (specified initial vehicle speed and gear selection at a fixed start point on the test site) in contrast to the procedure of SAE Recommended Practice J1030@ Maximum Sound Level for Passenger Cars and Light Trucks@ which has fixed terminal conditions (attainment of rated engine speed at a fixed end point on the test site). Full-throttle acceleration and closed-throttle deceleration of the vehicle are included in both procedures. Sound levels determined in accordance with this standard are dependent on the performance capability of the test vehicle@ as influenced by power-to-mass ration and overall power train gear ratio. Thus@ this standard is particularly applicable for emphasizing sound emission of vehicles with large power-to-mass ration or high overall gear ratio within the overall light vehicle population.
SAE J986-1981 history
2018SAE J986-2018 Sound Level for Passenger Cars and Light Trucks
2013SAE J986-2013 Sound Level for Passenger Cars and Light Trucks
1998SAE J986-1998 Sound Level for Passenger Cars and Light Trucks
1994SAE J986-1994 SOUND LEVEL FOR PASSENGER CARS AND LIGHT TRUCKS
1988SAE J986-1988 Sound Level for Passenger Cars and Light Trucks
1981SAE J986-1981 Sound Level for Passenger Cars and Light Trucks
1976SAE J986B-1976 SOUND LEVEL FOR PASSENGER CARS AND LIGHT TRUCKS
1972SAE J986A-1972 SOUND LEVEL FOR PASSENGER CARS AND LIGHT TRUCKS
1970SAE J986A-1970 SOUND LEVEL FOR PASSENGER CARS AND LIGHT TRUCKS
1967SAE J986-1967 SOUND LEVEL FOR PASSENGER CARS AND LIGHT TRUCKS