Gallery - cooled pistons featuring low -
friction piston rings to further reduce energy - sapping friction within the engine.
In the engine, components such as low -
friction piston rings, a variable fuel pressure module, and upgraded software for the engine control module improve overall operation.
IS F Dynamic Sport Tuning model (available in Japan) includes 7 PS (5 kW; 7 hp) engine power boost via low -
friction piston and pump, strengthened body contact, exclusive carbon front spoiler / rear diffuser, 7 kg (15 lb) lower body weight via exclusive titanium muffler, exclusive orange colour brake caliper with LEXUS logo, exclusive orange accent engine head cover, exclusive carbon interior panel at centre console and door switch base with nameplate, choice of 7 body colours including exclusive starlight black glass flake.
Powered by a 104bhp 1.6 - litre Duratorq TDCi diesel engine, it uses a new injection system and turbocharger as well as enhanced air cooling and friction reduction measures including low -
friction piston ring coatings and a variable flow oil pump.
Update: Nissan says the fuel - economy improvement comes from using low rolling - resistance tires, recalibrating the V - 6 engine's variable valve timing, reprogramming the engine computer, and fitting lower -
friction piston rings.
Low
friction pistons made of aluminium alloy are lightweight and have «micro-dimples» on the cylinder walls for improved lubrication.
Friction reducing measures include plateau honing, low
friction pistons, low tensile force piston rings and an offset cylinder bore.
It comes equipped with upgrades from the new CX - 5, including low -
friction pistons with edge - cut heads and new high - dispersion injectors, for quicker throttle response and reduced real - world fuel consumption and emissions.
A higher compression ratio, low -
friction pistons, high - performance cams, larger throttle body, hand - polished intake and exhaust ports and a freer flowing exhaust system all contributed to the power gain.
With low -
friction pistons, high performance camshafts, larger diameter throttle body and other tweaks, its engine delivers its peak 195 horsepower at 8,000 rpms - the red line on the tachometer is at 8,400 - and its peak torque at 7,300, which explains why it sounds the way an angry bee would sound if piped through disco - sized amplifiers.
A higher compression ratio, low -
friction pistons, high - performance cams, larger throttle body, hand - polished intake and exhaust ports and a freer - flowing exhaust all contributed to the power gain.
Not exact matches
Friction will destroy
pistons in an engine, for example, without lubrication.
This also limits the maximum RPM of the engine because there are increased
friction losses due to increased speed of the
piston at the same RPM when compared to an engine with less stroke.
As with the Development Package, the Edition 507 car also includes an upgraded brake system that includes lightweight discs (14.2 inches up front), six -
piston front and four -
piston rear calipers, and a different
friction compound for the pads.
Big brake rotors and four -
piston STR - 40 calipers from StopTech were added up front, while stock brakes with Cobalt
Friction pads were used in the rear.
This results in a much more perfectly cylindrical shape that in turn permits lower - tension
piston rings, reducing their
friction by an undisclosed amount (it typically accounts for 20 percent of overall engine
friction).
Other measures include forged
pistons, reinforced crankshaft bearings, toughened reduced -
friction bore liners, a stiffer crankcase, a shorter cooling circuit, and more efficient lubrication.
If the internals hold up, this will cause it to seize, and if enough power & momentum are involved it can weld the
pistons to the block, kind of like how some wheels are made by
friction welding
Rimac hasn't scrimped on the car's
friction braking system either — enormous 390 mm Brembo CCMR carbon - ceramic rotors fill each wheel rim, gripped by six -
piston calipers all round.
On the highway, the
pistons are moving so fast and hard, they keep going, but once stopped, the
friction prevents them from moving: seizure.
The standard
friction brakes are Brembos, with six -
piston calipers and 14.5 - inch vented aluminum rotors up front, and four -
piston calipers and 14 - inch vented aluminum rotors in the rear.
The claim is that the standard
piston engine, with straight up - and - down path, causes lots of
friction with the walls while the
piston travels through the chamber.
Although it was based on the ordinary Civic's 1.5 - liter unit, clever updates such as smaller crankshaft journals and fewer
piston rings (two per cylinder, versus the 1.5's three) were implemented in the name of reduced internal
friction.
Well, the latest dual - coil
piston reduces
friction, has a wider force range and cuts overall response time by 75 per cent to just five milliseconds.
Forged
pistons add strength, while a special «nano slide» coating inside the cylinders reduces
friction against the
pistons.
The
piston rings are carbon - coated to minimise internal
friction and optimise the wearing characteristics.
The dampers have new
piston rods to reduce
friction for more efficient control which translates into a feeling of greater body control with better bump absorption.
Resin coating is applied to the
pistons, and lightweight aluminum material is employed for the first time in a motorcycle in the
friction - reducing roller rocker arm.
Plateau honing lowers the
friction level between the
pistons and the cylinders by creating an ultra smooth surface.
Cast - in Silitec cylinder liners ensure low
friction for the eight
pistons.
Adding to the competition - derived feel are bold six -
piston Brembo brake calipers and high -
friction brake pads for optimal stopping and control.
Innovations introduced in the latest version include new low - noise injectors, a water cooled turbo for improved performance, reduced
piston friction for optimised efficiency, new EGR system for lower particulates, lighter engine components, faster glow plug operation, and enhanced NVH measures.
The output is courtesy engineering tricks like a weight - optimized forged crankshaft, forged
pistons with low -
friction rings, air - to - water intercooling and peak boost of 26 psi.
Double overhead camshafts control variable timed valves to regulate intake and exhaust while lightweight
pistons use materials to reduce
friction.
To reduce
friction loss in the engine,
pistons in the 1.8 litre engine have a molybdenum treatment applied in a polka - dot pattern.
The Nu four - cylinder engine also has an offset crankshaft design that reduces
friction and pressure between the
piston and cylinder wall for a one - percent improvement in fuel economy.
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
Even more, this V8 offers Dual Continuously Variable Valve Timing (D - CVVT), a tuned variable induction system, and low -
friction coatings on
piston skirts.
Other contributors to overall operating efficiency are a special 2 - stage oil pump relief valve, low -
friction oil seals, special low - drag
piston ring design, low -
friction cam chain and a lightweight crankshaft.
Ion - plated
piston rings help reduce
friction for greater operating efficiency.
The outer skirts of lightweight aluminum
pistons feature a low -
friction coating applied in a unique pattern.
Mechanical
friction is also reduced, further cutting engine noise and improving efficiency, with a new nano - diamond
piston coating.
[3] For Audi in their Audi R8 5.2 FSI quattro, the V10 was a compromise between a V12, which would be too long and suffer more internal
friction due to extra cylinders and valves, and a V8 which would be more compact but have larger, heavier
pistons and have a lower redline.
One reason is because the
piston travels straight up and down in the cylinder, eliminating side forces that cause
friction.
New
pistons were installed in the cylinder block, they had slightly modified skirts for
friction drop.
Subaru claims a 28 - percent reduction in
friction losses, mainly due to lighter
pistons and connecting rods.
The NR engine family (there's also a 1.5 L version in the Avanza) comes with intake and exhaust Dual VVT - i, teflon coating for the
pistons (to reduce
friction and improve durability), larger water jackets (better cooling, improved combustion, lower noise), roller rocker arm (reduces
friction between rocker arm and camshaft) and iridium spark plugs (the 1.0 L KR in the Bezza and Axia also uses the latter).
Powder - metal connecting rods have a full - floating
piston pin with diamond - like carbon coating for
friction reduction.
Graphite - coated
pistons are optimized to reduce
friction and weight.
Due to the ultra-smooth cylinder surface, low tension
piston rings could be utilized, which reduce
friction while maintaining sealing efficiency.