CWI recognizes these two methods will result in different calculated methane numbers for a given fuel composition, but this difference is expected to be small and not likely change CWI's acceptability of most automotive natural gas fuel compositions. The Cummins Proprietary calculation provides a more accurate representation of the true Methane Number of the fuel. CWI's fuel quality calculator switched to a Cummins Proprietary methane number calculation. For detailed information please refer to the Advanced Simulation Technologies Webarea Calculation of methane number and other fuel gas properties.Įqn 4). Appendix D Methane Number and Fuel Composition Consider Amendments to the California Alternative Fuels for. Motor Octane Number (MON) Methane Number (MN) MN = 1.624*MON – 119.1.x AB Energy 320 18 Technical description.doc Copyright ©(rg) 10/29. based on methane number calculation software AVL 3.1 Sound pressure level Aggregate b) dB(A) re 20µPa 95 31,5 Hz dB 78 63 Hz. There is no commonly agreed Methane Number calculation method and one would need. is stated in their Position Paper2 and shown in Figure 3. C 3 H 8 % i-Butane, C 4 H 10 % n-Butane, C 4 H 10 %.
The Cummins proprietary methane number calculation is a numerical. Cummins Westport’s (CWI) website fuel quality calculator was using an SAE based Methane Number (MN) calculation (SAE 9. This specification covers the natural gas fuel requirements for the following Cummins Westport automotive spark- ignited natural gas engine models: ISX1. To ensure the fuel you are using meets the required specifications, we've provided an online calculator for your reference. The minimum methane number requirement for the C, B and L Gas Plus engines is 6. 1 Comment Torrent Name AGE FILES SIZE Desktop Wallpapers - Miscellaneous () Date.Ĭonsult your fuel provider on a regular basis to ensure that natural gas fuel quality, in particular, the methane number, meets engine requirements. Methane Number Calculation Software Avl 3.1. GAS QUALITY Methane Number Calculation April12 of 4. methane number using the AVL methodwith some corrections that can be easily. of 4 GAS QUALITY Methane Number Calculation April12 2.
An engine's spark plug should ignite fuel, but additional fuel pockets sometimes combust. LNG fuel quality may change if it is held in storage for extended periods of time.ģ.72 3.72 3.72 = 51.48. Cummins Westport natural gas engines can operate on CNG, LNG or biomethane that meets Cummins published fuel specifications.Ĭustomers should note that pipeline natural gas fuel quality can vary on a regional and seasonal basis. Methane number Methane number to AVL method and simplified method.Ĭummins Westport - Fuel Quality Calculator. GasCalc includes the following calculation modules.
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