Heavy Duty Hydrogen Internal Combustion Engine Emissions Development to Achieve Ultra-low NOx Cummins, Incorporated

Format:

Book

Conference/Event

Author/Creator:

Shakya, Bijesh, author.

Xu, Hui, author.

Yang, Zhao, author.

Stetter, John, author.

Conference Name:

WCX SAE World Congress Experience (2026-04-14 : Detroit, Michigan, United States)

Language:

English

Subjects (All):

Hydrogen engines.

Internal combustion engines.

Exhaust emissions.

Local Subjects:

Hydrogen engines.

Internal combustion engines.

Exhaust emissions.

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2026

Summary:

This paper presents the emissions development of a heavy-duty hydrogen internal-combustion engine (H₂ICE) targeting ultra-low NOx with a design goal of 20 mg/hp-hours The approach integrates advanced thermal management of the engine and aftertreatment, including engine out NOx management through air-fuel ratio controls and an electric heater to accelerate catalyst light-off and sustain activity at low-load/idle conditions. A diesel-derived aftertreatment system (ATS) is selected to maximize practicality and component commonality, and an integrated controls strategy spanning the engine and ATS is implemented to demonstrate ultra-low NOx capability over EPA certification cycles. The paper concludes with considerations for periodic SCR regeneration to ensure emission compliance

Notes:

Vendor supplied data

Access Restriction:

Restricted for use by site license