The exhaust after-treatment system product designand developments together play a major role in driving commercialization and growth in theBS-VI commercial vehicle manufacturing sector. Accordingly, for manufacturers to capitalise on existing and up-coming market opportunities, product design and development strategies based on expanding customers’ necessities as well as market-specific challenges are a must. Though the after treatment system design is derived from EURO-VI, it cannot be implemented into BS-VI. A certain level of technology can only be transmitted to the Indian market CV applications. Accordingly, several market-specific challenges, like India's specific vehicle application as well as road-load conditions, are yet to be demarcated. Nevertheless, significant design requirements for meeting the OBD-2023 related to performance as well as emission targets for BS-VI after-treatment systems (ATS) must be considered without compromising the quality of the ATS systems due to CV (commercial vehicle) cost-sensitiveness and competitiveness. Moreover, for this box type exhaust after-treatment system design, top-down approaches are elaborated considering necessities like performance, durability, emissions, packaging, manufacturing, and assembly for service considerations. Though these are challenging requirements, a systematic design approach is essential. Based on this approach, ATS and catalyst technology concept selection are well-though and discussed. Henceforth, in order to realise the performance, quality, and durability requirements for box type after-treatment exhaust systems, quality tools such as design review, FMEA, and DVP process are incorporated and discussed. From the drop to idle test DPF material durability is well established upto 700 °C. Related to SCR, there is no concerns related to ammonia deposits and this proves robust ATS calibration.
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