Sentences with phrase «increasing egr»
Researchers at Oak Ridge National Laboratory have used on - board catalytic fuel reforming to increase the brake efficiency of a multicylinder, stoichiometric spark - ignited (SI) engine by increasing EGR dilution tolerance.
http://www.greencarcongress.com/ Not exact matches
I have been reading up on this, it seems that this extra throttle (if you really can call it that) is just there to increase suction and therefore flow of inert gasses from the EGR valve.
The engine RPM should drop noticeably when the tube is removed and plugged; increase RPM when hose is reattached to the EGR valve.
* Main bearings» profiles changed to enhance oil film thickness * Oil pump flow increased for increased pressure at low speeds * The turbocharger's oil circuit is changed to provide increased pressure at the turbo and faster oil delivery * The connecting rods» pin ends are modified to provide increased piston support * New, higher - strength piston design that eliminates bushings to provide lower reciprocating weight * An EGR cooler bypass reduces high - mileage soot deposits in the cooler and EGR circuit
Vehicles with EGR systems equipped with EGR coolers can potentially increase fuel efficiency by 2 to 3 %.
EGR coolers decrease the temperature of hot exhaust gases recirculated into the intake manifold, which also increases the density of the exhaust gas.
This helps increase the performance of EGR systems, which reduce engine loss and prevent engine knocking.
The benefits from internal EGR are two-fold: Firstly, internal EGR benefits part load fuel economy by diluting the charge within the cylinder, thus restricting output without the need for increased throttling and its associated pumping losses.
A specially designed straight intake port increases the tumble flow of the EGR gas to allow fast combustion to further aid economy and boost power output.
Features include two - step variable valve lift, cooled EGR, upgraded variable - valve timing, a new intake manifold, high - tumble intake ports, shrouded combustion chambers, eight - hole fuel injectors with optimized atomization, multiple friction - reduction features, and an increased compression ratio of 11.3:1 (but still only requires 87 octane fuel).
Additional engine features: Iron cylinder block and aluminum DOHC cylinder head Forged steel crankshaft and connecting rods Oiling circuit that includes a dedicated feed for the turbocharger to provide increased pressure at the turbo and faster oil delivery Piston - cooling oil jets 16.5:1 compression ratio Common rail direct injection fuel system Ceramic glow plugs for shorter heat - up times and higher glow temperatures Balance shaft that contributes to smoothness and drives the oil pump Laminated steel oil pan with upper aluminum section that contributes to engine rigidity and quietness B20 bio-diesel capability The Duramax 2.8 L is the cleanest diesel truck engine ever produced by General Motors, and meets some of the toughest U.S. emissions standards, thanks in part to a cooled exhaust gas recirculation (EGR) system.