The all-new Toyota Yaris - powertrains

The all-new Toyota Yaris - powertrains

27.07.2020: POWERTRAINS New fourth-generation Toyota hybrid electric powertrain All hybrid components are new, optimised for size, weight and efficiency New 1.5-litre Hybrid Dynamic Force Engine Greater fuel economy and emissions eff




POWERTRAINS




    New fourth-generation Toyota hybrid electric powertrain

    All hybrid components are new, optimised for size, weight and efficiency

    New 1.5-litre Hybrid Dynamic Force Engine

    Greater fuel economy and emissions efficiency, together with increased power and torque

    Significantly greater EV driving capability, at speeds up to 130 km/h




Fourth-generation hybrid electric system



The new Yaris uses the latest, fourth-generation Toyota hybrid technology and introduces new components that have been engineered to be compact, lightweight and efficient. It also equips the car with its first TNGA engine.



For the engineering team, the focus was not just on delivering a more efficient system, but also on making the car more enjoyable to drive, with tuning and calibration to suit European roads.



The data indicates the scale of the achievement. Overall efficiency has increased by 20%, which typically would be at the cost of performance. In fact, power is 16% higher at 116 DIN hp (total system output), with a 15% improvement in 0-100 km/h acceleration, to 9.7 seconds, and sharper response to the driver’s use of accelerator.



The car’s all-electric EV capabilities have been transformed: speeds of up to 130 km/h can be reached and EV driving is possible for longer periods in urban traffic. This means drivers can enjoy many of the benefits of a battery electric vehicle, but at a lower price and with no concerns about when or where the battery can be recharged.



CO2 emissions have dropped to 85 g/km and the WLTP combined cycle fuel economy figure is 3.7 l/100/km, a 20% improvement.



These values are unprecedented for a Toyota model and demonstrate the ability of hybrid electric technology to deliver even higher efficiency, without sacrificing performance.



The engineering team was committed to addressing the most common criticisms Toyota heard from Yaris Hybrid drivers. These focused on overtaking acceleration performance at highway speeds (the acceleration time from 80 to 120 km/h has been cut by two seconds to 8.1 seconds); quicker and more responsive acceleration at lower speeds, for example when negotiating a roundabout; and more linear, natural acceleration when driving on open, winding roads, to create a stronger fun-to-drive quality.



Each of the four principal components in the hybrid system contributes to the new Yaris’ enhanced drivability: the all-new Hybrid Dynamic Force Engine makes its debut in the car; the new lithium-ion battery; the all-new hybrid transaxle; and the power control unit. All have been developed using the TNGA philosophy, ensuring efficient design and ease of production at scale.

 




1.5-litre Hybrid Dynamic Force Engine



The all-new 1.5-litre Hybrid Dynamic Force engine is from the same TNGA engine family as the 2.0-litre four-cylinder unit featured in the Toyota Corolla and C-HR. It has a long stroke, 14.0:1 compression ratio and high-speed combustion with better temperature and pressure control. This contributes to the its exceptionally high thermal efficiency – 40% – ensuring that more of the energy potential of every drop of fuel is captured.



In common with all Toyota’s hybrid engines, it uses the Atkinson cycle, which keeps the intake valves open for longer, delaying the compression stroke. This improves efficiency and fuel economy, but reduces power output. Nonetheless, the new engine has a maximum output of 93 DIN hp/68 kW with a peak 120 Nm of delivered at lower revs (3,600 rpm).



The three-cylinder configuration also bring benefits in terms of noise levels. When running at 4,000 rpm, its performance is like a four-cylinder unit operating at 3,000 rpm, thus delivering more power and torque, but generating less noise.




The transmission is a e-CVT automatic – an electric continuously variable transmission – which provides linear acceleration feel and quiet operation.

 




Motor/generators




The hybrid system in the new Yaris has two motor/generators – MG1 and MG2. MG2 is linked to the front wheels and can be used as the power source to drive the vehicle. The motor rpm at which power can be directed to the wheels determines the maximum speed at which the car can be driven in EV (electric vehicle) mode, making MG2 critical to the car’s drivability on electric power.



MG1 is deployed to start the engine and to generate power to charge the battery.

 




Lithium-ion Hybrid Battery




The new Yaris adopts a lithium-ion hybrid battery, with voltage rising from 144 to 177.6 V. The number of cells has been reduced, from 120 to 48. The current flow is significantly improved: by 100% into the battery and 50% out.



With a significantly higher power density, the battery is both smaller and lighter, by 12 kg. Its compact dimensions allow it to be located beneath the rear passenger seat, together with the auxiliary battery, avoiding intrusion in the load space.



Lithium-ion battery technology is better able to supply current flow, which is key to the new Yaris having powerful EV performance in urban driving.

 




Hybrid Transaxle


The all-new hybrid transaxle is more compact and lightweight, with the two motor generators placed on multiple shafts instead of being placed one behind the other, reducing the unit’s width by around 37 mm. Motor/Generator 2 benefits from new segment-type coils on the stator, which makes the unit more compact. It can deliver 59 kW of power and 141 Nm of torque to the front wheels at a maximum 17,000 rpm.



The key benefit is a major improvement in performance, so that the engine can be turned off and the vehicle run in all-electric EV mode at speeds up to 130 km/h.



The transaxle also has a new oil pump, driven by the ring gear, which provides lubrication for both the gears and motor/generator 2.

 



Power Control Unit



The Power Control Unit has the capacity to handle 100 A of current, boosting the 177 V from the battery to 580 V and using transistor control in the inverter to change the current from direct to alternating. The transistors’ efficiency is affected by heat control inside the unit; by arranging them vertically, they can be cooled on both sides, allowing for more accurate heat control and thereby a higher frequency of current switching – up to 10,000 times a second. This makes a significant contribution to the system’s efficiency and transfer of power to the motor.



The converter in the power control unit converts the 177 V from the hybrid battery to 12V to power the car’s auxiliary components.

 




Power Split Device



The power split device is the heart of the hybrid system, governing the interaction between the components. It enables the car to operate as a parallel hybrid with the motor/generator 2 powering the car alone, or in combination with the hybrid petrol engine.

 


Additional powertrains



The new Yaris is also available with a 1.5-litre petrol engine with six-speed manual or continuously variable transmission (W-CVT) with a wide range – W – in first gear. This is essentially the same new three-cylinder unit featured in the hybrid system; compared to competitor small-capacity turbocharged engines, it offers good emissions and fuel economy performance.



In certain markets, a 1.0-litre three-cylinder petrol engine, similar to the one featured in the previous-generation Yaris, is available as an entry point to the new Yaris range.

 


- Stephan Lesuisse, photos Toyota

Permanent-URL: http://www.automobilsport.com/all-new-toyota-yaris-powertrains---209730.html

27.07.2020 / MaP

More News

The all-new Toyota Yaris - overview
27.07.2020
    First application of new GA-B platform enables style, compactness, practicality, driving enjoyment and safety    New fourth- generation hybrid system delivers 116 DIN hp, fuel economy of just 3.7 l/100 km and 85 g/km CO2 emissions (WLTP)    Engineered to be the world’s safest compact car wit more >>
The BMW X7 Dark Shadow Edition - Imposing presence, exclusive charisma
24.07.2020
Edition model of the first Sports Activity Vehicle in the luxury segment offers unique, exceptionally high-quality BMW Individual design and equipment features – produced in a limited edition of about 500 units at the BMW plant in Spartanburg – special BMW Individual paint finishes available for the BMW X7, BMW X6 and BMW X5 from August 2020 for the first time. more >>
KTM X-BOW GTX and GT2 premiere is getting closer -First glance from the cockpit perspective
23.07.2020
- The first production lot of 20 vehicles will be built this year and is already sold out- GT homologation almost completed, the car will set new standards in vehicle safety- New steering wheel, new operating concept, state-of-the-art camera mirror concept more >>
Kia injects new dynamism into compact SUV segment with first image of new Kia Sonet
23.07.2020
    Official rendering showcases Sonet’s bold, powerful and distinctive design DNA    Targeted at youthful, spirited buyers thanks to its sophisticated modern design, fascinating features and unmatched sense of dynamism    Sonet establishes a new design benchmark in the compact SUV class &n more >>
Production specification Aston Martin CALLUM Vanquish 25 by R-Reforged revealed
22.07.2020
•    Customer car build scheduled to start in September  Just nine months after announcing the project, the production iteration Aston Martin CALLUM Vanquish 25 by R-Reforged has been revealed alongside confirma more >>
The new Mercedes-AMG GLA 35 4MATIC
21.07.2020
Compact all-rounder as an entry to the Mercedes-AMG worldThe range of compact 35-series entry-level models to the world of Mercedes-AMG is now complete. The seven-member family extends from the more >>
New Lamborghini Ad Personam virtual studio Lamborghini Aventador SVJ Xago Edition
21.07.2020
- Special edition reserved for Ad Personam virtual studio consultationsAutomobili Lamborghini has created a new virtual Ad Personam studio, offering consultation sessions to clients worldwide who want to personalize their new Lamborghin more >>
The Skoda Slavia is the seventh student concept car
21.07.2020
    31 students from the ŠKODA vocational school create an exciting spider version of the ŠKODA Scala    Slavia spider inspired by ŠKODA 1100 OHC sports prototype    The Slavia name commemorates the anniversary of the company’s founding in 1895 more >>
Ford introduces Active Range to Tourneo and Transit Connect with fresh style and capability to tackle outdoor adventures
21.07.2020
    Distinctive new Tourneo Connect Active people mover and Transit Connect Active van offer adventurous private and business customers improved rough-road capability and bold style    Enhance more >>
Update makes Mercedes-Benz G-Class even more desirable
15.07.2020
- Iconic off-road vehicle with more equipment and scope for greater personalisation available to order nowThe G-Class is continuing its over 40-year success story: From the manufacturing date 1 September 2020, the standard equipment for the iconic off-road more >>
Mercedes-AMG GT Black Series fact sheet
15.07.2020
  Drive and driving performances    4.0 litre V8 biturbo motor with dry sump lubrication, identification code M178 LS2    537 kW/730 hp max. output at 6700-6900 rpm    800 Nm max. torque at 2000-60 more >>
The new Mercedes AMG GT Black Series - The absolute pinnacle of the AMG GT Family
15.07.2020
The most powerful AMG V8 series engine of all time, the most expressive design, the most elaborate aerodynamics, the most intelligent material mix, the most distinctive driving dynamics: For the new Mercedes-AMG GT Black Series (combine more >>
The Audi SQ7 and Audi SQ8 with V8 TFSI engine
15.07.2020
    4.0 TFSI engine for superior performance: 0–100 km/h (62.1 mph) in 4.1 seconds       Sport air suspension and all-wheel steering standard    European market launch beginning in autumn, more >>
All-New 2021 Ford Bronco Two-Door and First-Ever Four-Door Models
14.07.2020
Built Wild SUVs with Thrilling 4x4 Capability, Ready for Fun    Built Wild™: Ford Bronco returns as the flagship of a new all-4x4 family of rugged SUVs, with a classic two-door and a first-ever four-door; both are engineered with Built Wild Extreme D more >>
Family car: from the SEAT 1430 Estate to the all-new Leon Sportstourer
09.07.2020
    50 years after the SEAT 1430 5-door was born, SEAT celebrates the launch of the all-new SEAT Leon Sportstourer    In 1970, the SEAT 1430 received an estate five-door body, a vintage crossover, a saloon with van-like a more >>
Meet the Mercedes-Benz S-Class DIGITAL – first insights into the new luxury saloon
06.07.2020
Mercedes-Benz launches the new S-Class communication with digital specials on Mercedes me media   Mercedes-Benz is expanding its digital information platform w more >>
"Le MANSORY"
01.07.2020
MANSORY presents the complete conversion "Le MANSORY" based on the Ford GT - the cult super sports car from America, which became a legend through the film "Le Mans Under the motto "One car per decade", "Le MANSORY", which is limited to only 3 copies worldwide, forms another special edition on the occasion of MANSORY's 30th anniversary in 2020. more >>
The new BMW M3 Sedan and the new BMW M4 Coupé on the racetrack
01.07.2020
Final sprint on the way to the first row of the starting gridDriving dynamics tests on the new high-performance sports car under racetrack conditions deliver decisive insight into the ideal harmonisation of drive and transmission technology &ndash more >>
Eagle launches Ultimate E-Type - The legendary lightweight comprehensively re-engineered for the road
25.06.2020
    The most comprehensively upgraded E-Type ever built    8,000 hours of craftsmanship    Intoxicating blend of E-Type character with modern reliability, comfort and performance more >>
Volkswagen Arteon Shooting Brake R and Arteon R-Line world premiere
24.06.2020
One becomes two: world premiere of the new Arteon1 and Arteon Shooting Brake1 The vehicles are near-series prototypes. Fastback and Shooting Brake – there will be two versions of the Arteon in future   more >>
Life just got that much more exhilarating with the New MEGANE R.S. 300 TROPHY
24.06.2020
The New MEGANE R.S. 300 TROPHY is the ultimate fusion of exceptional design and heart-racing performance.The Trophy versions are renowned for their thoroughbred efficiency combining performance and accuracy, and the newest Renault MEGANE R.S. 300 TROPHY certainly lives up to this legacy. more >>
Lotus celebrates the Exige with sensational 20th anniversary Special Edition
24.06.2020
    Lotus Exige Sport 410 20th Anniversary celebrates two decades of the critically acclaimed and thrilling two-seater    Uprated models feature enhanced exterior and interior spec, with a higher level of stand more >>
New Bentayga is first car of Bentley’s Beyond100 business strategy
24.06.2020
    Bentley to reveal new Bentayga at 17:00 BST on 30 June    Pinnacle SUV benchmark to be raised even higher    Bentayga to continue to have the widest brief of any car on sale more >>
Lamborghini SCV12: Squadra Corse hypercar ready to hit the track
23.06.2020
    Track-only limited edition hypercar world première is scheduled for summer 2020       The engine is the most powerful V12 from Lamborghini to date    Aerodynami more >>
The New CUPRA Ateca 2020
23.06.2020
The new recipe for the brand’s high-performance SUV    Updated exterior design to add an even more purposeful, confident look to the high-performance compact SUV    Interior design upgrades the cabin with a mo more >>
The new BMW M5 and BMW M5 Competition with photos
17.06.2020
  The arrival of the new BMW M5 (fuel consumption combined: 10.6 – 10.5 l/100 km [26.6 – 26.9 mpg imp]; CO2 emissions combined: 242 – 239 g/km) and BMW M5 Competition (fuel consumption combined: 10.6 – 10.5 l/100 km [26.6 – 26. more >>
The new BMW M5 Competition
17.06.2020
• High-performance saloon fuses sports car driving dynamics with everyday usability.• Powered by a 625hp 4.4-litre V8 engine with M TwinPower Turbo technology.• Chassis tuned for on-track performance with the addition of new dampers.• Introduction of M Mode and larger 12.3-inch Central Information Display powered by BMW Opera more >>
Return of the Mach! Limited-Edition Mach 1 is Pinnacle of Mustang 5.0-Liter V8 Style and Performance
16.06.2020
    480 horsepower limited-edition Mach 1 sets a new standard of 5.0-liter V8 track-ready performance in the Mustang lineup while celebrating original model’s aggressive aerodynamic and handling enhancements    Six-speed manual transmission from Ford Performance and an available 10-speed automatic transmission provides capabili more >>
New SEAT Ateca 2020: reinvigorating the success story
15.06.2020
    The new SEAT Ateca 2020 brings a design evolution to the compact SUV thanks to its more emotional exterior design language and its updated interior       The SEAT Ateca becomes fully connected integrating in-car c more >>
All-electric Lexus UX 300e heralds new milestone in Lexus silent revolution
15.06.2020
    New urban crossover boasts class-leading noise, vibration, harshness (NVH) levels    Serenity of cabin environment pays tribute to the very first Lexus    All-electric drivetrain, advanced aerodynamics and extensive sound insulation contribute to a near-silent ride more >>
New Peugeot 308 Range
12.06.2020
The PEUGEOT 308 was named ‘Car of the Year’ at launch and since then over one and a half million vehicles have been sold. Now, the multi-award winning PEUGEOT 308 is being updated for the 2020 collection.  A new "Vertigo Blue" colour and two new alloy wheels will be available, whilst inside, the dashboard is equipped with a 100% digital PEUGEOT i-Cockpit® as well as a more >>
Mitsubishi Triton goes Xtreme
11.06.2020
•    R100 000 value package at only R40 000 more than current model - South Africa•    Xtreme package boasts a host of interior upgrades, including Android Auto / Car Play•    Bold looks fitting an adventurous and extreme lifestyle with unique external features including new bumper and grill combo more >>
New Bentley Continental GT V8 Convertible - the perfect summer grand tourer
11.06.2020
    First full summer of global deliveries for new Continental GT V8 Convertible, joining W12-powered sibling       Beautiful and elegant design with the roof open or closed  more >>
Lifestyle estate in its 3rd generation: The new SKODA OCTAVIA SCOUT
10.06.2020
› Boasting off-road virtues, the new-generation OCTAVIA continues the SCOUT models’ success story› Multifunctional lifestyle estate with a rugged appearance and 15 mm more ground clearance› Even more spacious and the first OCTAVIA SCOUT with front-wheel drive on request more >>
Iconic Mustang Color Cyber Orange Now Offered for 2021 Mustang Mach-E GT
10.06.2020
What’s in a color? When it comes to orange, one of the most popular colors for Ford Mustang, a lot.Ford is introducing Cyber Orange Metallic Tri-Coat for Mustang Mach-E GT – a bold, eye-catching premium exterior color designe more >>
Reservations open for all-electric new Fiat 500 Hatchback
09.06.2020
    Reservations for the New 500 ‘la Prima’ hatchback open    No deposit required to reserve New 500 ‘la Prima’ hatchback    Features include a  panoramic glass sunr more >>
E-Ducato, the new model from Fiat Professional: “100% Ducato, 100% Electric”
09.06.2020
    “World Environment Day” is the ideal opportunity to focus on Fiat Professional’s environment-friendly offering, now expanded with the E-Ducato, the electric version of the best seller.    Since its presenta more >>
New Ateca 2020: SEAT’s reinvigorated SUV success story is coming
08.06.2020
    The new SEAT Ateca 2020 brings a design evolution to the compact SUV thanks to its more emotional exterior design language and its updated interior    The compact SUV offers a fully connected user experience for customers    The new SEAT Ateca 2020 brings another levels of comfort and safety to the segment more >>
Bentley Bentayga - 20.000 pinnacle luxury SUVs
05.06.2020
    20,000 examples of the benchmark luxury SUV now built    Bentayga defined and has grown luxury SUV segment since launch    Four years of extraordinary adventures    Power, agility and record breaking performance    First step on Bentley’s journey to more >>

2001-2020 automobilsport.com full copyright