Exhaust gas recirculation - Wikipedia
EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. The exhaust gas displaces atmospheric air and reduces O 2 in the combustion chamber.
What Is an EGR Valve and What Does It Do? - Cars.com
Jul 27, 2025 · EGR stands for exhaust gas recirculation, and the EGR valve is part of a system that recirculates exhaust gas back into the engine’s intake manifold for a return trip to the …
What Is an EGR Valve in a Car and What Does it Do? - AutoZone
What is an EGR Valve? The primary function of the EGR valve in a car is to help reduce harmful NOx emissions, which result in air pollution and can contribute to various respiratory illnesses.
Egr Explained: What It Does And How It Affects Your Car
Jul 6, 2025 · EGR stands for Exhaust Gas Recirculation, a vehicle emissions control concept used in both gasoline and diesel engines. The EGR valve is a key component of a car's exhaust …
The basics of EGRs - what they do, how they work, how to …
Integral to the vehicle’s engine management system, the aptly named exhaust gas recirculation valve, or EGR valve for short, recirculates finely metered quantities of exhaust gas to the …
What Is An EGR Valve And Common EGR Problems To Look Out …
Jul 1, 2025 · Simply put, EGR is short for exhaust gas recirculation. This is one of many initialisms used in the automotive industry for a system, or a component within a system, that is part of the...
Exhaust Gas Recirculation (EGR) Systems | Valeo Service
Exhaust Gas Recirculation (EGR) is an efficient, cost-effective system for reducing automotive nitrogen oxide (NOx) emissions. The high-pressure EGR loop collects part of the exhaust …
What Is An EGR System? - Car And Truck
Dec 23, 2025 · Discover what an Exhaust Gas Recirculation (EGR) system is, how it reduces NOx emissions, its benefits, components, common issues, and maintenance tips.
What Does an EGR Valve Do? A Complete Guide 2025
Feb 21, 2025 · The Exhaust Gas Recirculation (EGR) valve is a crucial component in modern vehicle engines, designed to improve fuel efficiency and reduce emissions. If you’ve ever had …
EGR Valve Replacement: How to Diagnose, Clean, or Replace an EGR …
4 days ago · A complete U.S.-focused guide to EGR valve problems—covering symptoms, diagnostics, cleaning vs replacement, step-by-step procedures, emissions implications, costs, …