Laurent Leprieur

Title: Laurent Leprieur: Inventor in Engine Exhaust Aftertreatment

Introduction

Laurent Leprieur is an inventor based in Limours, France, whose patent work focuses on monitoring and diagnosing exhaust aftertreatment systems for internal combustion engines. He is associated with Renault S.A.S. and is credited with 4 patents.

Latest Patents

Two of Leprieur’s latest patents address the detection and monitoring of exhaust aftertreatment components.

“Method and Device for Detecting the Presence of an Exhaust Gas Treatment System in an Exhaust Line of an Internal Combustion Engine” describes a method that compares temperature changes measured upstream and downstream of the treatment system. The comparison helps determine whether the system is absent.

“Method and Device for Monitoring a Particle Filter in the Exhaust Line of an Internal Combustion Engine” concerns diagnosing an exhaust aftertreatment element. Its controller tracks engine decelerations and changes in a measured exhaust-gas characteristic, then uses those counts to assess whether a fault signal should be triggered.

Career Highlights

Leprieur’s patent contributions reflect work on diagnostic methods for engine exhaust systems. The inventions use temperature measurements and operating-condition data to help identify missing or malfunctioning aftertreatment components.

Collaborations

Leprieur’s listed coworkers include Bernard Dionnet and Nicolas Thouvenel. His work is associated with Renault S.A.S.

Conclusion

Laurent Leprieur’s patents focus on practical diagnostic techniques for detecting and monitoring exhaust aftertreatment systems, including particle filters, in internal combustion engines.