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EGR has nothing to do with oil vapor re-routing from a positive crankcase ventilation system (PCV) system, as the latter is only there to reduce oil vapor emissions, and can be present on engines with or without any EGR system. However, the tripartite mixture resulting from employing both EGR and PCV in an engine (i.e. exhaust gas, fresh air ...
Although EGR requires a diesel particulate filter, it is the preferred solution for Class I operators, as SCR adds another consumable with handling and storage issues by maintenance personnel. [ 7 ] The four-stroke engine design was re-introduced in the mid-2010s to meet Tier 4 without using SCR.
Volvo D5 engine D5244T15 (), in 2015 model year Volvo XC70It is an all-aluminium five-cylinder engine with 20 valves and double overhead camshafts.In all but one late version it has a VGT turbocharger of the type VNT (variable nozzle turbine), common rail direct injection and cooled exhaust gas recirculation (EGR).
The series-turbo system is set up to provide a better throttle response while in motion to give a power flow more like a naturally aspirated engine. The 6.4 L also has a DPF and dual EGR coolers which are capable of reducing exhaust gas temps by up to 1,000 degrees before they reach the EGR valve and mix with the intake charge.
Download QR code; Print/export Download as PDF; Printable version; In other projects Wikidata item; Appearance. ... EGR may refer to: Transportation
In addition to changing the fuel, US engineers have also come up with two other principles and distinct systems to all on-market products that meet the U.S. 2010 emissions criteria, [citation needed] [needs update] selective non-catalytic reduction (SNCR), and exhaust gas recirculation (EGR). Both are in the exhaust system of diesel engines ...
The changes included the addition of an exhaust gas recirculation (EGR) system, and a variable geometry turbocharger system to improve torque. In September 2004, Detroit Diesel ceased production of the Series 50 heavy duty diesel engine for on highway applications due to emissions standards. It is still available for off-road applications.
An EGR system is applied as well, allowing the engine to achieve Tier 4 without the use of urea aftertreatment. Another new feature of this engine is the Double-Walled Fuel Injection System that increases safety and provides simplified maintenance works.