HORIBA's Revolutionary Technology Gains U.S. EPA Approval for NOx Emissions Measurement

HORIBA's Groundbreaking Approval to Measure NOx Emissions

On March 18, 2025, HORIBA, a renowned leader in measurement and analysis solutions, celebrated a significant achievement: its Infra-Red Laser Absorption Modulation (IRLAM™) technology received approval from the U.S. Environmental Protection Agency (EPA). This landmark decision allows the use of IRLAM as a validated alternative for measuring nitrogen oxides (NOx) in the certification process for both heavy-duty engines and light-duty vehicles.

This innovative IRLAM technology represents a major leap forward in infrared gas analysis, seamlessly combining advanced sampling methodologies with state-of-the-art computational algorithms to deliver precise and dependable measurements. As a result, HORIBA has rolled out an array of measurement systems optimized for both laboratory settings and on-road applications. The devices are designed to be compact, resilient to interference, and exceptionally reliable, meeting the demands of today's automotive industry.

Darren Andrews, Executive Vice President and General Manager at HORIBA, commented on the significance of the IRLAM technology, stating, "IRLAM was designed to maximize testing flexibility without compromising data quality. Our lineup of IRLAM-based products supports improved vehicle environmental performance and helps the automotive industry reduce emissions, even as electrification advances. By 2030, our product roadmap will expand to include additional gas species and applications."

The comprehensive testing data, both internal and external, underscores the advantages offered by IRLAM in NOx measurement—resulting in enhanced data quality and potential cost-efficiency. With heightened accuracy, streamlined wet measurement processes, minimized interference, and reduced maintenance requirements, the technology promises consistent and timely responses.

With the EPA's approval letter in hand, original equipment manufacturers (OEMs) can now use HORIBA’s IRLAM-based analyzers for NOx measurements during certification testing. This approval strengthens the industry's capabilities to adhere to rigorous emissions regulations, paving the way for improved environmental outcomes.

The Role of HORIBA

Established in 1953, HORIBA has been at the forefront of innovation in measurement and analysis technologies. The company has built a formidable reputation through its diverse range of products tailored to fulfill global customer demands, backed by 47 group entities operating across 28 countries. Operating under the corporate motto of 'Joy and Fun,' HORIBA is dedicated to developing and refining solutions that address pressing energy challenges of the present and future, contributing actively to sectors such as Energy & Environment, Biology & Healthcare, and Materials & Semiconductors.

For further information regarding HORIBA’s products and its recent innovations in motor exhaust gas analysis employing IRLAM technology, visit the official website.

In conclusion, as environmental regulations continue to tighten, technologies like HORIBA's IRLAM are crucial for enabling the automotive industry to meet future standards while advancing in the direction of electrification and sustainability. The EPA's endorsement marks a key milestone in enhancing emission measurement methodologies, supporting a cleaner and more efficient era of transportation.