Gm Variable Compression Engine

The fruit of their labor is the VC-Turbo engine , and the 2019 Infiniti QX50 SUV is the first vehicle to feature the world’s first production variable ...

https://www.popularmechanics.com/cars/car-technology/a22143603/infiniti-variable-compression-engine/

The concept of a variable compression ratio is that automakers are looking to optimize both power and efficiency by changing how much fuel and air mixture is squeezed in the engine ’s power stroke. Higher compression typically yields greater fuel efficiency and power, but in modern turbocharged engines , there is a limit to how much squish can

https://www.hagerty.com/media/maintenance-and-tech/gm-variable-compression-impressive-trick/

An internal combustion engine has a mechanism to control the compression ratio of the combustion chamber. The mechanism includes an eccentric journal bearing supporting each piston rod on the crankshaft of the engine . The journal bearing has a gear member secured thereto that meshes with an inner toothed profile of a ring gear which has an outer toothed ...

https://patents.google.com/patent/US6450136B1/en

There have been patents filed for variable - compression rotary engines , and Saab designed a variable - compression engine , as well, but neither reached the market. GM shelved the latter after buying

https://www.cnet.com/roadshow/news/variable-compression-ratios-infinitis-new-main-squeeze/

The engine made by MCE 5 offers a variable compression ratio, offering improved performance with fewer emisions and less consumption

https://www.youtube.com/watch?v=9dLxHOuWErI

The ideal pairing for a variable compression engine is with a turbocharged motor as it can take advantage of the low compression ratio to generate power without compromising fuel economy. The closest OEM to production previously was Saab, which had a working prototype turbocharged 1.6-liter five-cylinder engine in 2000 known as Saab Variable

https://www.thetruthaboutcars.com/2016/10/infinitis-variable-compression-turbo-holy-grail-power-efficiency/

• With new variable compression ratio, valve actuation and supercharging technologies however, the degree of engine downsizing and fuel economy improvement can be greatly increased. • A small variable compression ratio (VCR) engine has the potential to return significantly higher vehicle fuel economy while also providing high power.

https://www.energy.gov/sites/prod/files/2014/07/f17/ace092_mendler_2014_o.pdf

Variable displacement is an automobile engine technology that allows the engine displacement to change, usually by deactivating cylinders, for improved fuel economy.The technology is primarily used in large, multi-cylinder engines . Many automobile manufacturers have adopted this technology as of 2005, although the concept has existed for some time prior to this.

https://en.wikipedia.org/wiki/Variable_displacement

the province of engine designers and performance enthusiasts. Not so with variable cam timing. In 2002, GM released its DOHC in-line Six 4.2L engine , starting a new gen-eration of engines with variable cam timing. Given the term cam phasingby Delphi, the company that developed and manufactures the system, the en-gine first appeared in S/T model

https://www.motor.com/magazinepdfs/082009_09.pdf

2022 Nissan Rogue Adds Variable Compression Engine , Retains CVT. Fresh off a substantial redesign for 2021, the Nissan Rogue enters its sophomore year with a new engine option. On tap is a version of the brand’s variable compression technology, applied to a 1.5-liter turbocharged three-banger good for 201 horsepower and 225 lb-ft of torque

https://www.thetruthaboutcars.com/2021/11/2022-nissan-rogue-adds-variable-compression-engine-retains-cvt/

How to Delete or Disable AFM on GM Chevy Engines . There are two ways to disable or delete Active Fuel Management on your GM or Chevy Gen IV LS or LS-based Vortec engine —one is to install an AFM Disabler, and the second is to install an AFM Delete Kit. Here’s what you need to know: 1. Install an AFM Delete Kit

https://www.onallcylinders.com/2017/11/30/how-to-delete-or-disable-active-fuel-management-afm-on-gm-engines/

Mechanical Engineering questions and answers. 12 A large truck has a supercharged V10 SI engine with a displacement of 380 in.3, which is equipped with variable compression ratio. The Otto cycle engine is operated in two differ- ent modes, high load when starting up or going up a hill and low load when cruising on level roadway.

https://www.chegg.com/homework-help/questions-and-answers/12-large-truck-supercharged-v10-si-engine-displacement-380-3-equipped-variable-compression-q25174428

GM engineers envision a crankshaft or electric motor to drive the supercharger, while a continuously variable transmission could control the ...

https://www.motorauthority.com/news/1114317_gm-patented-a-ridiculously-high-compression-twin-charged-hybrid-powertrain

GM has filed a half dozen new engine patents in the past 3 years for ultra compression variable compression engines . And most of their “EV” investment has all been sanctioned “government

https://gmauthority.com/blog/2021/09/general-motors-discontinues-supercharged-6-2l-lt5-v8-crate-engine/

Variable Compression Ratio (VCR) as a Solution. One measure to tackle these limitations involves varying the compression ratio during engine operation. Lower compression ratio at high load decreases pressures and temperatures at the end of compression . At part load, higher compression ratio improves fuel consumption and, hence, CO 2 emissions.

https://vcr.fev.com/

Variable Compression Ratio is being actively researched by many automotive OEM's such as GM , Nissan, Honda, Yamaha, and Mercedes to name a few. VCR is seen as a major potential contributor in improving the fuel efficiency of internal combustion engines . While actively researched, it has not yet entered full production with anyone, the closest

http://www.dukeengines.com/advantages/a-variable-compression-ratio/

Eight years ago, General Motors was well-aware of the benefits that variable compression could offer in the combustion of ethanol. quot;Since the compression ratio can be varied and adjusted to suit the properties of the fuel, the engine will always run at the compression ratio that is best suited to the fuel being used,quot; GM said when it announced

http://www.ethanolproducer.com/articles/3615/variable-compression-concepts/

The VC-T engine is rated at 268 hp and 288 lb-ft of torque. He also says that the 2019 QX50 with the variable - compression 2.0-liter engine will reach 60 mph almost one second faster than its four-cylinder competitors. The VC-Turbo engine complete with heat exchanger. Images courtesy Infiniti.

https://www.enginelabs.com/news/infinitis-variable-compression-engine-is-real-will-debut-in-2019/

Infiniti Preparing World's First Variable-Compression Engine for 2018. The ability to vary an engine 's compression ratio has been a quot;holy grailquot; quest of engine engineers for decades, because quot;one

https://www.msn.com/en-us/autos/news/infiniti-preparing-worlds-first-variable-compression-engine-for-2018/ar-BBvCcdn

The GM 2.0 LTG Ecotec engine is excellent. It combines the power of NA 3.0/4.0-liter V6s and V8s with the fuel efficiency of a tiny four-cylinder engine . It is the first inline-4 engine in a Camaro since the third-generation model. The Camaro 2.0T LTG engine produces 275 HP at 5,600 rpm and 295 lb-ft of torque at 3,000 rpm.

https://dustrunnersauto.com/gm-2-0l-ltg-everything-you-need-to-know/

GM offers the following diagnostic steps in determining if this is the problem. 1. Perform a Cylinder Deactivation (Active Fuel Management) System Compression Test. If Problems regarding Chevy 5.3L engines , if the running compression of the misfiring cylinders stays below 25 PSI. Regardless of the AFM solenoid being commanded on or off.

https://roadmasterengineworld.com/2018/01/ticking-noise-misfire-2005-14-gm-v8-engines-afm/

GM was successful but did not have a proper four cylinder motor to put the new technology in. GM put the technology to the side. Until 2004 when it was used on the Cadillac LH2 version of the Northstar in the STS, XLR, and SRX sport utility vehicle. The LH2 introduces a number of firsts for the Northstar engine . The compression ratio was

https://www.autonerdz.com/yabbfiles/Attachments/GM_CAS.pdf

The new Nissan 2.0 L VC-Turbo ( Variable Compression Turbo) offers similar performance figures to the 24-year-old 3.5 L V6 that it replaces, while providing 4-cylinder fuel economy. The first vehicle to receive the engine in the Nissan lineup will be the 2019 Altima SR. While it might be a few years before this engine is in your bays, the preparation and training ...

https://www.import-car.com/nissan-variable-compression-the-engine-that-will-change-performance-service/

2022 Nissan Rogue Gets Three-Cylinder, Variable - Compression Turbo Engine By Peter Holderith, The Drive 11/17/2021 US Coronavirus: One dangerous way the Omicron surge is different than previous

https://www.msn.com/en-us/autos/enthusiasts/2022-nissan-rogue-gets-three-cylinder-variable-compression-turbo-engine/ar-AAQOMfe

Infiniti's newest engine is an engineering marvel.The VC-T engine (for quot; variable compression , turbochargedquot;) can adjust its compression ratio ...

https://www.roadandtrack.com/new-cars/car-technology/a15942295/heres-exactly-how-infinitis-variable-compression-engine-works-and-why/

Here's the New Infiniti QX50 and Its Variable Compression Engine The QX50's engine can continuously alter its compression ratio from a punchy 8:1 to a fuel-sipping 14:1. READ NOW

https://www.thedrive.com/article/16979/gm-patents-twincharged-engine-with-at-least-101-compression

That's why Nissan's Variable Compression -Turbo (VC-T) engine is such a big deal. It's tuned to a higher state than most engines . Nissan first launched this VC-T technology on a 2.0-liter 4

https://carbuzz.com/features/nissan-s-variable-compression-engine-is-changing-the-gasoline-game

The engine is a 2.0 liter turbocharged four-cylinder that Nissan is calling the VC-T( Variable Compression -Turbocharged). The VC-T engine will allow for the compression ratio to be dynamically

https://jalopnik.com/worlds-first-variable-compression-ratio-engine-could-ki-1785295848

2022 Nissan Rogue gets new 3-cylinder turbo engine . At 1.5 liters, this little dynamo is a cutdown version of the automaker's larger 2.0-liter variable - compression engine and it's a winner.

https://www.cnet.com/roadshow/news/2022-nissan-rogue-engine-debut/

Not so with variable cam timing. In 2002, GM released its DOHC inline Six 4.2L engine , starting a new generation of engines with variable cam timing. Given the term cam phasing by Delphi, the company that developed and manufactures the system, the engine first appeared in S/T model SUVs such as the Chevy TrailBlazer.

https://www.motor.com/magazine-summary/new-twist-on-an-old-story-gms-variable-valve-timing/

A variable compression ratio (VCR) internal combustion engine includes an engine block defining a cylinder and a cylinder head mounted to the engine block and defining at least a part of a combustion chamber. The engine also includes a reciprocating primary piston arranged inside the cylinder and configured to compress a mixture of air and fuel and a ...

https://patents.justia.com/patent/20170284290

GM Family II Engine - Ecotec Gen III - 2.5 - LCV. First appearing in the 2013 Chevrolet Malibu and 2013 Cadillac ATS, the 2.5 L Gen III block has been reworked to reduce engine noise and vibrations, while improving fuel economy and low-end torque. LCV is scheduled to replace the direct-injected 2.4 L throughout North American GM products within

https://www.liquisearch.com/gm_family_ii_engine/ecotec_gen_iii/25/lcv

Variable Compression Ratio. Saab’s variable - compression engine was a supercharged, 1.6-liter inline-five capable of up to 225 horsepower and 225 lb-ft of torque, along with claimed fuel savings

https://gmauthority.com/blog/2017/12/remembering-saabs-crazy-variable-compression-engine-from-2001-history-alley/

The internal combustion engine 20 described herein provides a variable compression ratio engine that enables the use of an Atkinson cycle, in which the compression stroke length 118 is less than the expansion stroke length 124, in both high load and high engine speed conditions and low load and low engine speed conditions, to achieve the fuel

https://patents.google.com/patent/US20170284291A1/en

Mazda's Skyactiv suite and Infiniti's variable compression technology are not really all that comparable. You may be familiar with the modified Atkinson Cycle used in many efficiency-oriented car; that was invented back in the 1880s by one, Mr. Cycle [/British humour].

https://www.coloradofans.com/threads/engine-tech-skyactiv-x-vs-variable-compression.413169/

GM Patents Twin-Charged, Variable Dynamic Compression, Hybrid Engine . By Chase Christensen December 13, 2017. The rumor mill from GM drivetrain has been ablaze lately. Just a few weeks ago, we found out that two new powerplants, both of which are dual-overhead cam V8s, were officially on their way, likely destined for the C8 Corvette.

https://www.lsxmag.com/news/gm-patents-twin-charged-variable-dynamic-compression-hybrid-engine/

The variable compression engine concept was shelved because GM execs wanted to reduce production costs and developing a new engine concept meant new expenses. Instead, the conventional 2.3-liter T7 engine was used in the 9-5 model.

https://www.eeuroparts.com/blog/saabs-variable-compression-engine-strange-live-rare-die/

Saab Variable Compression Engine , 2000. Wiki Commons Saab's idea was an engine with a two-part block that could squeeze the cylinder head closer to the block using a hydraulic actuator to increase

https://www.roadandtrack.com/new-cars/car-technology/news/a30392/infiniti-vc-t-variable-compression-turbo/

GM ’s Patented Variable Compression Engine - How It WorksSponsored by Skillshare - https://skl.sh/engineeringexplained2The First 500 To Sign Up Using The Link

https://www.youtube.com/watch?v=d3md1EqL1h4

The 6.0L V-8 L96 is a heavy-duty workhorse engine . Variable Valve Timing helps the 6.0L L96 optimize performance, efficiency, and emissions. Intake flow was improved over previous engines by straightening out and optimizing the flow path from the intake manifold into the cylinder heads, while the exhaust ports are designed for greater flow. The

https://poweredsolutions.gm.com/products/gm-powertrain-6.0-l-l96-engine-features-specifications.pdf

This Is How GM ’s New Variable Compression Engine Works. The idea of increasing the engine ’s compression ratio for the sake of obtaining more performance is not really new. The high-comp heads were actually among the first hop-up parts that became available for the Ford’s Model A four-banger and the famous flathead V-8 engines .

https://wonderfulengineering.com/this-is-how-gms-new-variable-compression-engine-works/

The VC-T engine is rated at 268 hp and 288 lb-ft of torque. He also says that the 2019 QX50 with the variable - compression 2.0-liter engine will reach 60 mph almost one second faster than its four-cylinder competitors. The VC-Turbo engine complete with heat exchanger. Images courtesy Infiniti.

https://www.enginelabs.com/news/infinitis-variable-compression-engine-is-real-will-debut-in-2019/

Infiniti Preparing World's First Variable-Compression Engine for 2018. The ability to vary an engine 's compression ratio has been a "holy grail" quest of engine engineers for decades, because "one

https://www.msn.com/en-us/autos/news/infiniti-preparing-worlds-first-variable-compression-engine-for-2018/ar-BBvCcdn