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Cadillac Introduces First-Ever Twin-Turbo V-8 Engine


Cadillac Introduces First-Ever Twin-Turbo V-8 Engine

Sophisticated, all-new 4.2L Twin Turbo V-8 is during a heart of new CT6 V-Sport’s model performance

2018-03-23

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Cadillac starts a new section in a high-performance bequest with today’s introduction of a brand’s first-ever twin-turbo V-8 engine. It is a centrepiece of a new CT6 V-Sport, an enchanting sports sedan infused with DNA of Cadillac’s world-renowned motorsports program.

Developed as a small-displacement V-8 in a classical capillary and charity well-developed energy firmness of 131 hp (98 kW) per litre, this new Cadillac-exclusive 4.2L Twin Turbo V-8 — GM estimated during 550 horsepower (410 kW) and 627 lb-ft of torque (850 Nm) — elevates a CT6’s opening to a new plateau and offers drivers an forlorn knowledge behind a wheel.  An discretionary 500-horsepower chronicle will also be available.

“Cadillac’s opening record reaches new heights with a new and disdainful 4.2L Twin Turbo V-8,” pronounced Cadillac President Johan de Nysschen. “The innovations that harmonise it consolidate a really spirt of Cadillac opening on and off a racetrack.”

The new Cadillac Twin Turbo V-8 is a clean-sheet pattern that also introduces singular pattern elements grown to change opening and potency with compact, mass-efficient packaging.

“Designing an all-new engine was a best approach to grasp a opening goals for a CT6 V-Sport,” pronounced Jordan Lee, 4.2L TT V-8 arch engineer. “It builds on Cadillac’s timeless turbocharging expertise and forges new belligerent with innovative facilities that broach well-developed opening and refinement.”

At a centre of a 4.2L Twin Turbo V-8 is a “hot V” pattern that transposes a required blueprint of a cylinder heads’ intake and empty systems to mountain a turbochargers during a tip of a engine — in a hollow between a heads — to probably discharge turbo loiter and revoke a engine’s altogether wrapping size.

In a required turbocharged engine, a cylinder heads accept a pressurized atmosphere assign by ports during a tip of a engine and a empty exits by ports on a revoke outward of a heads into manifolds connected to a turbochargers.

With Cadillac’s innovative prohibited V design, a intake-charged atmosphere enters by a revoke outward of a heads and exits by a tip inside — where a turbochargers are integrated with a empty manifolds — for discerning spool-up that translates into some-more evident energy delivery. The pattern also allows closer ascent of a catalytic converters, for fit packaging.

Additional engine highlights:

  • Twin-scroll turbochargers
  • Electronic wastegate control
  • Twin water-to-air assign coolers
  • Twin stifle bodies
  • Direct injection
  • Dual-independent camshaft phasing
  • Active Fuel Management (cylinder deactivation)
  • Variable-pressure oiling system
  • Stop/start technology

Each engine will be hand-built during a Performance Build Center in Bowling Green, Kentucky.

SMALL DISPLACEMENT, LARGE EFFECT

The new Cadillac Twin Turbo V-f8’s substructure is an all-new, durable and lightweight aluminum cylinder retard that houses an equally robust, lightweight rotating public stoical of a fake steel crankshaft, fake steel joining rods and high-strength aluminum pistons.

The crankshaft’s 90.2mm (3.55 inch) cadence complements a cylinder bores’ 86mm (3.39 inch) hole to give a engine a 4.2L (255 cubic-inch) displacement.

Its partially tiny gimlet dimension enables a rebate in a distance and weight of a pistons, optimizing a engine’s geometry to compare a fast-rev capability accessible by a engine’s low-inertia, twin-scroll turbochargers. The outcome is well-developed responsiveness and immediacy of energy opposite a rpm band.

The turbochargers furnish adult to 20 pounds of boost (1.38 bar) and are matched with electronic wastegate control for some-more accurate boost government and some-more manageable torque production. In fact, 90 percent of a engine’s rise torque is accessible during usually 2000 rpm, and it is carried by 5200 rpm for a confident, probably unfounded energy reserve.

TWIN-SCROLL TURBOCHARGERS

The turbos’ twin-scroll pattern broadens their opening capability, charity quicker response and larger efficiency. Rather than a singular turn cover (scroll) feeding empty gas from a empty plural to expostulate a turbine on any turbocharger, a twin-scroll pattern has a divided housing with twin empty gas inlets and twin nozzles to expostulate a turbine. Generally, one of a nozzles contributes to quicker response and boost production, while a other contributes to altogether rise performance.

Each of a engine’s integrated empty manifolds/turbocharger housings splits a empty channels from a cylinder conduct so a empty flows by apart scrolls formed on a engine’s empty pulses. When matched with accurate valve timing, that subdivision leverages exhaust-scavenging techniques to optimize gas flow, improves turbine potency and reduces turbo lag.

The electronically tranquil wastegates — one per turbocharger — are used for some-more accurate government of a engine’s boost vigour and successive torque response for smoother, some-more unchanging performance. They are exclusively tranquil on any cylinder bank to change a turbo compressors’ output, for larger boost vigour response.

WATER-TO-AIR CHARGE COOLING AND DUAL THROTTLE BODIES

An fit water-to-air charge-cooling complement contributes to a engine’s performance, enhancing a turbochargers’ effectiveness. Similar in judgment to an engine’s radiator, a system’s intercoolers cold a increased atmosphere assign before it enters a cylinders. Cooler atmosphere is denser, that means there is some-more oxygen in a given volume, ensuing in optimal explosion and some-more power.

The complement facilities a span of feverishness exchangers located above a valley-mounted empty manifold/turbocharger housings. The turbos siphon pressurized atmosphere directly by a feverishness exchangers and into a cylinder heads. The feverishness exchangers are cooled by their possess coolant circuit.

The intercoolers revoke a atmosphere assign heat by some-more than 130 degrees F (74 C), make-up a explosion chambers with cooler, denser air. Also, a complement achieves some-more than 80 percent cooling potency with usually about 1 psi (7 kPa) upsurge limitation during rise power, that contributes to quick torque production.

Before entering a explosion chambers, a cooled atmosphere assign flows by a span of stifle bodies, one for any engine bank. Each electronically tranquil stifle physique has a 59mm hole opening.

NEW 10-SPEED TRANSMISSION

The new Cadillac Twin Turbo V-8 is matched with a 10-speed involuntary transmission. Its wide, 7.39 altogether rigging ratio widespread enhances off-the-line opening and contributes to reduced engine speed on a highway, that enhances excellence and efficiency. Smaller stairs between a gears also assistance a engine say a optimal speed for limit energy during roughly all car speeds.

ADDITIONAL TECHNOLOGIES

Direct fuel injection is used to optimize potency and performance. With approach injection, a aloft application ratio — 9.8:1 — is probable given of a cooling outcome as a injected fuel vaporizes in a explosion chamber, shortening a assign heat to relieve a odds of hint knock. A span of engine-mounted, camshaft-driven high-pressure fuel pumps reserve fuel to a specialized injectors during 5,075 psi (350 bar), with any siphon provision fuel to one bank of a engine.

Active Fuel Management (AFM), also famous as cylinder deactivation, undiscernibly shuts down half of a engine’s cylinders in certain light-load pushing conditions to raise fuel economy. Unique deactivating rocker arms are used for any of a 4 valves of a cylinder being deactivated.

Dual beyond camshafts and a probably wordless chain-driven valvetrain minister to a fibre and a high outlay of a Cadillac Twin Turbo V-8, while twin eccentric invariably non-static valve timing helps broach optimal opening and efficiency. The twin eccentric system, that allows a intake and empty valves to be phased during opposite rates, promotes linear fibre of torque with near-peak levels over a extended rpm range, and high specific outlay (horsepower per litre of displacement) but sacrificing altogether engine response or drivability.

Oil jets located in a retard are employed for opening and heat control. Four jet assemblies in a engine suffuse a underside of a pistons and a surrounding cylinder walls with an additional covering of cooling, friction-reducing oil. The jets revoke piston temperature, permitting a engine to furnish some-more energy but shortening long-term durability.

Variable-pressure oiling system. A variable-displacement vane oil siphon enhances potency by optimizing oil vigour as a duty of engine speed. With it, a oil supply is matched to a engine bucket rather than a linear operation of a conventional, fixed-flow oil pump.  The engine uses 10 quarts of General Motors’ dexos2 0W40 engine oil.

Stop/start technology shuts down a engine when a car stops momentarily, such as during stoplights. The engine automatically restarts when a motorist takes their feet off a brake. An auxiliary battery powers electric accessories such as a meridian system, energy windows and radio during engine restarts.

###

SPECIFICATIONS

ENGINE

TRANSMISSION

 

About Cadillac in Canada

Cadillac has been a heading oppulance automobile code given 1902. Today, Cadillac is flourishing globally, driven by an expanding product portfolio featuring thespian pattern and technology. More information on Cadillac appears at www.cadillac.ca. Cadillac’s media website with information, images and video can be found at media.cadillac.ca.

Categories
GM Canada

Cadillac Introduces First-Ever Twin-Turbo V-8 Engine


Cadillac Introduces First-Ever Twin-Turbo V-8 Engine

Sophisticated, all-new 4.2L Twin Turbo V-8 is during a heart of new CT6 V-Sport’s model performance

2018-03-23

Back

PrintPrint  

SendEmail 

Word  


Share Add This
 

Cadillac starts a new section in a high-performance bequest with today’s introduction of a brand’s first-ever twin-turbo V-8 engine. It is a centrepiece of a new CT6 V-Sport, an enchanting sports sedan infused with DNA of Cadillac’s world-renowned motorsports program.

Developed as a small-displacement V-8 in a classical capillary and charity well-developed energy firmness of 131 hp (98 kW) per litre, this new Cadillac-exclusive 4.2L Twin Turbo V-8 — GM estimated during 550 horsepower (410 kW) and 627 lb-ft of torque (850 Nm) — elevates a CT6’s opening to a new plateau and offers drivers an forlorn knowledge behind a wheel.  An discretionary 500-horsepower chronicle will also be available.

“Cadillac’s opening record reaches new heights with a new and disdainful 4.2L Twin Turbo V-8,” pronounced Cadillac President Johan de Nysschen. “The innovations that harmonise it consolidate a really spirt of Cadillac opening on and off a racetrack.”

The new Cadillac Twin Turbo V-8 is a clean-sheet pattern that also introduces singular pattern elements grown to change opening and potency with compact, mass-efficient packaging.

“Designing an all-new engine was a best approach to grasp a opening goals for a CT6 V-Sport,” pronounced Jordan Lee, 4.2L TT V-8 arch engineer. “It builds on Cadillac’s timeless turbocharging expertise and forges new belligerent with innovative facilities that broach well-developed opening and refinement.”

At a centre of a 4.2L Twin Turbo V-8 is a “hot V” pattern that transposes a required blueprint of a cylinder heads’ intake and empty systems to mountain a turbochargers during a tip of a engine — in a hollow between a heads — to probably discharge turbo loiter and revoke a engine’s altogether wrapping size.

In a required turbocharged engine, a cylinder heads accept a pressurized atmosphere assign by ports during a tip of a engine and a empty exits by ports on a revoke outward of a heads into manifolds connected to a turbochargers.

With Cadillac’s innovative prohibited V design, a intake-charged atmosphere enters by a revoke outward of a heads and exits by a tip inside — where a turbochargers are integrated with a empty manifolds — for discerning spool-up that translates into some-more evident energy delivery. The pattern also allows closer ascent of a catalytic converters, for fit packaging.

Additional engine highlights:

  • Twin-scroll turbochargers
  • Electronic wastegate control
  • Twin water-to-air assign coolers
  • Twin stifle bodies
  • Direct injection
  • Dual-independent camshaft phasing
  • Active Fuel Management (cylinder deactivation)
  • Variable-pressure oiling system
  • Stop/start technology

Each engine will be hand-built during a Performance Build Center in Bowling Green, Kentucky.

SMALL DISPLACEMENT, LARGE EFFECT

The new Cadillac Twin Turbo V-f8’s substructure is an all-new, durable and lightweight aluminum cylinder retard that houses an equally robust, lightweight rotating public stoical of a fake steel crankshaft, fake steel joining rods and high-strength aluminum pistons.

The crankshaft’s 90.2mm (3.55 inch) cadence complements a cylinder bores’ 86mm (3.39 inch) hole to give a engine a 4.2L (255 cubic-inch) displacement.

Its partially tiny gimlet dimension enables a rebate in a distance and weight of a pistons, optimizing a engine’s geometry to compare a fast-rev capability accessible by a engine’s low-inertia, twin-scroll turbochargers. The outcome is well-developed responsiveness and immediacy of energy opposite a rpm band.

The turbochargers furnish adult to 20 pounds of boost (1.38 bar) and are matched with electronic wastegate control for some-more accurate boost government and some-more manageable torque production. In fact, 90 percent of a engine’s rise torque is accessible during usually 2000 rpm, and it is carried by 5200 rpm for a confident, probably unfounded energy reserve.

TWIN-SCROLL TURBOCHARGERS

The turbos’ twin-scroll pattern broadens their opening capability, charity quicker response and larger efficiency. Rather than a singular turn cover (scroll) feeding empty gas from a empty plural to expostulate a turbine on any turbocharger, a twin-scroll pattern has a divided housing with twin empty gas inlets and twin nozzles to expostulate a turbine. Generally, one of a nozzles contributes to quicker response and boost production, while a other contributes to altogether rise performance.

Each of a engine’s integrated empty manifolds/turbocharger housings splits a empty channels from a cylinder conduct so a empty flows by apart scrolls formed on a engine’s empty pulses. When matched with accurate valve timing, that subdivision leverages exhaust-scavenging techniques to optimize gas flow, improves turbine potency and reduces turbo lag.

The electronically tranquil wastegates — one per turbocharger — are used for some-more accurate government of a engine’s boost vigour and successive torque response for smoother, some-more unchanging performance. They are exclusively tranquil on any cylinder bank to change a turbo compressors’ output, for larger boost vigour response.

WATER-TO-AIR CHARGE COOLING AND DUAL THROTTLE BODIES

An fit water-to-air charge-cooling complement contributes to a engine’s performance, enhancing a turbochargers’ effectiveness. Similar in judgment to an engine’s radiator, a system’s intercoolers cold a increased atmosphere assign before it enters a cylinders. Cooler atmosphere is denser, that means there is some-more oxygen in a given volume, ensuing in optimal explosion and some-more power.

The complement facilities a span of feverishness exchangers located above a valley-mounted empty manifold/turbocharger housings. The turbos siphon pressurized atmosphere directly by a feverishness exchangers and into a cylinder heads. The feverishness exchangers are cooled by their possess coolant circuit.

The intercoolers revoke a atmosphere assign heat by some-more than 130 degrees F (74 C), make-up a explosion chambers with cooler, denser air. Also, a complement achieves some-more than 80 percent cooling potency with usually about 1 psi (7 kPa) upsurge limitation during rise power, that contributes to quick torque production.

Before entering a explosion chambers, a cooled atmosphere assign flows by a span of stifle bodies, one for any engine bank. Each electronically tranquil stifle physique has a 59mm hole opening.

NEW 10-SPEED TRANSMISSION

The new Cadillac Twin Turbo V-8 is matched with a 10-speed involuntary transmission. Its wide, 7.39 altogether rigging ratio widespread enhances off-the-line opening and contributes to reduced engine speed on a highway, that enhances excellence and efficiency. Smaller stairs between a gears also assistance a engine say a optimal speed for limit energy during roughly all car speeds.

ADDITIONAL TECHNOLOGIES

Direct fuel injection is used to optimize potency and performance. With approach injection, a aloft application ratio — 9.8:1 — is probable given of a cooling outcome as a injected fuel vaporizes in a explosion chamber, shortening a assign heat to relieve a odds of hint knock. A span of engine-mounted, camshaft-driven high-pressure fuel pumps reserve fuel to a specialized injectors during 5,075 psi (350 bar), with any siphon provision fuel to one bank of a engine.

Active Fuel Management (AFM), also famous as cylinder deactivation, undiscernibly shuts down half of a engine’s cylinders in certain light-load pushing conditions to raise fuel economy. Unique deactivating rocker arms are used for any of a 4 valves of a cylinder being deactivated.

Dual beyond camshafts and a probably wordless chain-driven valvetrain minister to a fibre and a high outlay of a Cadillac Twin Turbo V-8, while twin eccentric invariably non-static valve timing helps broach optimal opening and efficiency. The twin eccentric system, that allows a intake and empty valves to be phased during opposite rates, promotes linear fibre of torque with near-peak levels over a extended rpm range, and high specific outlay (horsepower per litre of displacement) but sacrificing altogether engine response or drivability.

Oil jets located in a retard are employed for opening and heat control. Four jet assemblies in a engine suffuse a underside of a pistons and a surrounding cylinder walls with an additional covering of cooling, friction-reducing oil. The jets revoke piston temperature, permitting a engine to furnish some-more energy but shortening long-term durability.

Variable-pressure oiling system. A variable-displacement vane oil siphon enhances potency by optimizing oil vigour as a duty of engine speed. With it, a oil supply is matched to a engine bucket rather than a linear operation of a conventional, fixed-flow oil pump.  The engine uses 10 quarts of General Motors’ dexos2 0W40 engine oil.

Stop/start technology shuts down a engine when a car stops momentarily, such as during stoplights. The engine automatically restarts when a motorist takes their feet off a brake. An auxiliary battery powers electric accessories such as a meridian system, energy windows and radio during engine restarts.

###

SPECIFICATIONS

ENGINE

TRANSMISSION

 

About Cadillac in Canada

Cadillac has been a heading oppulance automobile code given 1902. Today, Cadillac is flourishing globally, driven by an expanding product portfolio featuring thespian pattern and technology. More information on Cadillac appears at www.cadillac.ca. Cadillac’s media website with information, images and video can be found at media.cadillac.ca.