Ashok Leyland gets innovative on SCR & EGR Front

Posted by admin | September 12, 2017 | Blog
SCr adblue & EGR technology of Ashok Leyland

After revealing the use of ‘smart’ EGR to help its CVs to comply with BSIV emission norms, Ashok Leyland has announced that it is innovating on various fronts to ensure that its products are relevant, and make a profitable business case. If the ‘Smart’ EGR technology, which the folks at Ashok Leyland call iEGR, has enhanced fuel efficiency by 10 percent and minimised the usage of electronics; have kept the weight constant and reliability good, the innovation is also expected to result in lighter, safer, efficient and world-class products. According to the chief technology officer Dr. Seshu Bhagavathula, the company is planning three upgrades to address a shift to CVs with the higher power to weight ratio, and CVs with fully-built AC cabins. This, mentions Bhagavathula, will occupy our time and effort.

In view of the changes affecting the CV industry, Ashok Leyland is banking on technology and innovation.

With the rise in operating speeds set to change the way the long haul segment operates, Ashok Leyland is finding an opportunity to innovate. It also stems from the need to match the duty cycle requirements; the need to change engine calibration parameters, and to collect data. “All this will have to be done in the next couple of years,” mentions Bhagavathula. He explains, “EGR is suitable for Indian conditions rather than SCR. SCR can be offered at the price of an EGR, but will result in higher maintenance cost.” Connecting higher maintenance cost of SCR to the need for urea dosing and electronics, Bhagavathula opines, “SCR systems are not bad. It is EGR that we believe will help our CV users in the long run.” A function of the engine as much as it is the function of fuel quality, driver and the road conditions, EGR, mentions Bhagavathula, offers the advantage of less number of parts. The bill of materials is better. “We researched. We collected data. We found out that EGR is less complex,” he reveals.

If the ‘smart’ EGR developed by Ashok Leyland has the ability to help a 400 hp engine to meet BSIV emission norms, much work has gone into the tweaking of the cooling system, the exhaust gas control valve among others. The in-cylinder combustion process was optimised. “We combined intelligence with EGR. We gave five percent back and a maximum of 10 percent exhaust gas instead of 20 percent. The intelligence thus is in the combustion chamber, and not at the EGR level. It reduces the role of a Particle Oxidation Catalyst (POC), and could even eliminate it. We optimised in-cylinder temperature as well,” Bhagavathula elaborates.

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