This standard is applicable to the selection and design of exhaust mufflers for gasoline engines below 30kW and with a bore diameter of no more than 75mm.
JB/T 5141-1991 history
2014JB/T 5141-2014 Exhaust silencers of general utility small gasoline engines.Design parameters
1991JB/T 5141-1991 Design parameter of exhaust silencer of small gasoline engine