The new three - liter V6 gasoline unit with its aluminum
crankcase weights just 172 kilograms (379.2 lb).
Gravity - die sand - cast all - aluminium
crankcase Weight - optimised crank mechanism with forged steel crankshaft Forged pistons with friction - optimised piston rings NANOSLIDE cylinder liner technology Air - to - water intercooling system Alternator management ECO start / stop function
Not exact matches
American cars won't get the two biggest
weight savings options — about 35 pounds from the manual transmission's casing and another 35 - ish pounds from the
crankcase in the 1.4 - liter four that'll be the base engine elsewhere — but they'll still weigh between 70 and 100 pounds lighter than the previous A4, depending on trim.
The main difference between the old and new engines is Audi's adoption of an aluminium
crankcase, itself the main contributor to a total engine
weight reduction of 26 kg.
The block, head, and
crankcase are made from aluminum, cutting
weight, while direct injection, multi-spark ignition, and a variable camshaft design on the intake side all contribute to greater fuel efficiency.
The
crankcase is very rigid due to its closed - deck design — which means that the cylinder water jacket is closed at the top — while thermally joined, high - strength cylinder liners with twin - wire, arc - sprayed coating save
weight, allow greater thermal transfer due to the thinner cylinder wall thickness and reduce internal friction.
This technology package improves throttle response and revving ability as well as refinement and efficiency, while an aluminum
crankcase also optimizes
weight.
Titanium valves, ultra — light
weight rocker arms with a diamond — like coating and a fully integrated lower
crankcase that reduces pumping losses at high RPMs combine to provide the driver with overwhelming acceleration right up to the 9,000 rpm redline.
Key to the car's performance improvements are a 26 kg
weight reduction in the engine, thanks in part to an aluminium
crankcase, along with dual injection and higher turbocharger boost.
Tech highlights of the mill include spray - guided direct petrol injection via piezo injectors positioned centrally in the four combustion chambers, a gravity - die sandcast all - aluminium
crankcase,
weight - optimised crank assembly with forged steel crankshaft and forged pistons with friction - optimised piston rings.
The fuel savings are gained from use of fuel - efficient direct - injection technology, and engineers cut 8 pounds off the overall engine
weight via a thinwall
crankcase casting, exhaust headers that are integrated into the cylinder head and changes to the bearings.
Durable, Long Life Engine Design The RANGER Diesel Kohler engine has a compact, heavy - duty design with a cast iron
crankcase for durability and an aluminum cylinder head for
weight reduction.