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The goal of EGR is thus to reduce NO x production by reducing the combustion temperatures. In modern diesel engines, the EGR gas is usually cooled with a heat exchanger to allow the introduction of a greater mass of recirculated gas. However, uncooled EGR designs do exist; these are often referred to as hot-gas recirculation (HGR).
Water Injection and cooled exhaust gas recirculation (EGR) could be seen as competitive technologies: it has been demonstrated that at medium load a 40-50 % Water-to-Fuel Ratio (WFR) with Port Water Injection (PWI) has the same effect as an EGR-rate of 10%, which is seen as relatively limited even for petrol engines. [15]
The worst problem met in air-cooled aircraft engines was the so-called "shock cooling", when the airplane entered in a dive after climbing or level flight with throttle open, with the engine under no load while the airplane dives generating less heat, and the flow of air that cools the engine is increased, a catastrophic engine failure may ...
The Wankel engine (/ˈvaŋkəl̩/, VUN-kell) is a type of internal combustion engine using an eccentric rotary design to convert pressure into rotating motion. The concept was proven by German engineer Felix Wankel, followed by a commercially feasible engine designed by German engineer Hanns-Dieter Paschke. [1]
It was first used in the F56 Mini Hatch and has been used in BMW applications since 2015. The B48 is part of a modular BMW engine family of 3-cylinder ( B38 / B37 ), 4-cylinder (B48/ B47 ) and 6-cylinder ( B58 / B57 ) engines, [ 1 ] which use a displacement of 500 cc (30.5 cu in) per cylinder.
Work Completed: Engine performance problem resolved by replacing one of the VarioRam lifters in the intake manifold, shock absorbers replaced with custom-made coilovers complete with Wheeler Dealers logos on top of the strut mounts, brake backing plates and suspension drop links replaced, faulty rear spoiler mechanism fixed by replacing broken ...
It was developed in partnership with BMW, sharing the platform and many parts from the BMW Z4 (G29) with BMW derived 4- and 6-cylinder turbocharged engines and maintaining rear-wheel drive layout from the previous Supra. The model is designated with BMW model codes "J29" or "DB", however Toyota used the "A90" and "A91" codes for promotional and ...
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