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Exhaust gas recirculation (EGR) is an emission control technique that allows for considerable NOx emission reductions from most diesel engines, ranging from light-duty engines to medium- and heavy-duty engine applications, and even low-speed, two-stroke marine engines.
While NOx reduction is the most prevalent rationale for using EGR in current commercial diesel engines, its potential applicability extends to other areas as well. Some of them include imparting knock resistance and decreasing the requirement for high load fuel enrichment in SI engines, assisting liquid fuel vaporisation in SI engines, and acting as an enabler for closed cycle diesel engines.
Exhaust gas recirculation (EGR) is a good way to reduce NOx emissions from diesel engines. The EGR lowers NOx by decreasing the oxygen content in the combustion chamber and absorbing heat. Several designs, including high- and low-pressure loop EGR, as well as hybrid systems, have been suggested.
EGR is also utilized in gasoline engines to minimize pumping work and improve engine efficiency. In North America, EGR was frequently utilized for NOx management in spark-ignited gasoline passenger vehicle and light-duty truck engines. Some gasoline-powered applications were able to do without EGR after the early 1990s.
Following its introduction in gasoline engines, EGR was later used in diesel passenger vehicles, light-duty trucks, and finally heavy-duty diesel engines.
While heavy-duty diesel applications date back to the 1970s, it was not until the early 2000s that cooled EGR became widely used in heavy-duty diesel engines in North America. Due to the more severe technological hurdles compared to the light-duty application, this heavy-duty application drew the greatest attention to EGR.
To know more about Global Commercial Vehicle EGR Market, read our report
A mix of NOx reduction catalysts and EGR systems is utilized to cope with stringent NOx emission standards. Vehicles in European nations are subjected to severe inspections to ensure that they meet emission regulations.
Similar rules have been enacted in Japan and the United States. Such emission rules are enacted by governments in order to decrease the impact of hazardous gases on human health and the environment. The major goal of these regulations is to minimize NOx and PM emissions from automobile gasoline.
The consumption of global automotive exhaust gas recirculation valves and coolers increased at a double-digit growth rate due to the effects of emission regulations, whereas in China, due to the China IV emission standard, the consumption of automotive exhaust gas recirculation valves increased rapidly in 2014.
The growing use of SCR over EGR systems technology, which has resulted in a decline in the use of EGR systems, may have an influence on the growth of the Global Automotive EGR systems market. Many vehicle manufacturers employ SCR, a technique that uses AdBlue to convert excess NOx emissions into water and nitrogen.
Commercial vehicles are in high demand in the United States. The growing demand for commercial vehicles fuels the market for automotive exhaust gas recirculation (EGR) systems.
The presence of major automotive EGR system manufacturers, which are primarily concentrating on important developments such as expansion, mergers and acquisitions, product introduction, and others, is also driving the region’s growth.
Furthermore, the fact that individuals spend the majority of their time inside cars necessitates the use of modern technology such as automotive exhaust gas recirculation (EGR) systems.
The Global EGR Systems Market can be segmented into following categories for further analysis.
The engine EGR system is intended to minimize the quantity of nitrogen oxides generated by the engine during running periods characterized by high combustion temperatures.
When combustion temperatures approach the adiabatic flame temperature, significant quantities of NOx are produced. By cycling tiny quantities of exhaust gases into the intake manifold, where they mix with the incoming air/fuel charge, the EGR system decreases NOx generation.
The most recent technology has been through the changes in circulation and capture methodology used within the EGR Systems of the market.
The System has a focused approach which is to be at a later initiated on a manufacturing stage. In the EGR system exhaust gas is tapped off before the turbine, run through a cooler and mixed with the intake air after the compressor and aftercooler,
This is done with a minimum of disturbance to the pressure balance across the engine by confining a very efficient venturi-mixer unit with a VGT turbocharger. The venturi-mixer is positioned between the aftercooler and the intake manifold and provides a suction power to the EGR gas.
To tackle the possible corrosion within the engine requirements over the vehicles lifetime, some diesel engine manufacturers propose low pressure EGR systems as an alternative to the more conventional high pressure EGR systems.
The exhaust gas flow is recirculated back into the charge air flow downstream from the Charge Air Cooler in high pressure EGR systems (CAC). The recirculated exhaust gas flow is mixed with the charge air flow upstream of the CAC in low pressure systems.
Tires are the heart and soul to operational mechanism of the EV at all times throughout its life that contributes to being the least expensive conglomerate part onboard the vehicle.
The EVs tyres need to be technologically advanced and better modified through various requirements being fulfilled at all times. the additional weight of any batteries and electric motor is offset by increasing the load-bearing capacity of the tire carcass, as indicated on most tires by an XL symbol on the sidewall.
Energy losses due to tires are of particular concern to EV manufacturers. With rolling resistance accounting for up to 20% of a vehicle’s energy consumption.
BorgWarner is one of the leaders in development of the EGR Modules and Systems with other internal part advancements being carried out under its regularised research and development requirements for the market.
It has developed the electrically actuated EGR valves feature a high actuation force, fast response time, flexible mounting orientations, compact package size and patented anti-contamination / anti-sticking technology.
With their high flow capability, excellent sealing, and corrosion resistance, they operate reliably in the most severe environments, enabling medium- and heavy-duty commercial diesel engines and vehicles to comply with increasingly rigorous global emissions standards. BorgWarner has also pioneered in the development of exhaust gas heat exchangers to meet increasingly strict emissions standards.
Denso Corporation is another major developer and manufacturer of latest technology equipment and is also involved in large scale development of the EGR Systems. In an effort to meet stricter fuel efficiency and exhaust emission regulations worldwide, DENSO Corporation has developed its first EGR cooler for gasoline engines.
The newly developed EGR cooler is 30 percent smaller than the smallest one currently available on the market, while offering equal performance. This EGR cooler will greatly help reduce the overall EGR system size. It is aimed on the mechanical backgrounds of the vehicles with EGR systems equipped with EGR coolers can potentially increase fuel efficiency by 2 to 3 percent.
