Fuel Injector selection in diesel engine for BS6 emission upgradation
2022-01-0530
03/29/2022
- Event
- Content
- For meeting the stringent BS VI emissions in a 3 cylinder diesel engine the Exhaust after treatment system was upgraded from a single brick DOC (diesel oxidation catalyst) to 2 brick DOC+sDPF configuration. To meet the demands of emission regulation and sDPF requirements, changes were also required in the Fuel injection system. Major changes were done in the fuel injector and fuel pump. This paper primarily discuses on the Fuel injector change from 1.1 to 2.2 family with changes in nozzle geometry, Nozzle tip protrusion and injector cone angle and the effects on the emission and performance parameters. The various design values of NTP, cone angle and Sac values are tested in actual engine to meet the require power , torque and verified to meet NOx, HC , PM values as required by new BS VI regulation. Other boundary conditions are also checked – BSFC, temperature etc. The design change that was needed for the injector upgradation – Cylinder head interface, injector clamp , fuel pump and fuel hoses are also described in detail. The paper also discusses the durability tests done for validating the new injector on parameters like nozzle coking, nozzle tip temperature and various endurance tests reports are discussed. The finalized design has been validated on both engine testbed and vehicle successfully.
- Citation
- vinaya murthy, v., "Fuel Injector selection in diesel engine for BS6 emission upgradation," SAE Technical Paper 2022-01-0530, 2022, .