article thumbnail

New Mercedes-AMG SL 43 features engine with electric exhaust gas turbocharger derived directly from Formula 1

Green Car Congress

liter turbocharged M139 engine featuring an electric exhaust gas turbocharger. The electric exhaust gas turbocharger solves the conventional trade-off between a small, responsive turbocharger yielding a lower total output and a large turbocharger capable of high peak power with less responsiveness. An electric motor around 1.6

Exhaust 284
article thumbnail

2022 Lexus LC 500 Convertible Review – Still Got It

The Truth About Cars

But otherwise, the LC 500 convertible feels as fresh as ever. Usually, convertible versions of sports coupes suffer from chassis flex and wind/road noise and the like, but this car doesn’t, at least for the most part – you might get some chassis flex when hitting a severe enough bump, but it’s rare. liter V8 sounds with the top down.

Lexus 85
article thumbnail

Audi presents latest SQ5 TDI diesel; 48V MHEV & electric compressor

Green Car Congress

An actuator in the exhaust system, as fitted to the first SQ5 TDI, gives the V6 a sonorous sound. This offers the advantage since exhaust gas cleaning responds more quickly. The exhaust manifold benefits from improved insulation; the exhaust gas reaches the optimum temperature more quickly after a cold start. liters (0.2

Audi 269
article thumbnail

Nonthermal plasma torch reforming of exhaust gas for NOx trap regeneration

Green Car Congress

Researchers from the Center for Energy and Processes (CEP), MINES ParisTec, and Renault are exploring the non-catalytic reforming of diesel fuel with diesel engine exhaust gas (i.e. An alternative to the catalytic exhaust gas reforming of diesel fuel method is presented in this paper and consists of using an NTP torch. trap catalyst.

Exhaust 199
article thumbnail

Audi’s mighty diesel: SQ8 TDI SUV coupé; 48V MHEV

Green Car Congress

TDI that draws its power from 3,956 cm 3 of displacement, the intake side is on the outside and the hot exhaust side with the two turbochargers is in the inner “V”. To do this, the Audi valvelift system (AVS) opens the second exhaust valve in each of the combustion chambers, which was closed previously. liters (30.2 liters (0.1

Diesel 236
article thumbnail

Two engine options in new Mazda6; updated 2.5L with cylinder deactivation, turbo 2.5L with Dynamic Pressure Turbo

Green Car Congress

The outside two cylinders can shut down when the vehicle is operated at steady speeds between 25 and 50 mph, but all four cylinders work instantaneously when needed for maximum performance. Mazda’s Dynamic Pressure Turbo varies the degree of exhaust pulsation depending on engine speed. SKYACTIV-G 2.5T. engine.

Engine 170
article thumbnail

Audi introduces new CNG A3 Sportback

Green Car Congress

Its turbocharger with variable turbine geometry makes optimal use of the exhaust gas energy for early and harmonious torque development. The cylinder head, injection system, turbocharger and catalytic converter were modified accordingly for the CNG engine. The A3 Sportback 30 g-tron 1.5 lb-ft) of torque between 1,400 and 4,000 rpm.

Audi 504