Mild hybrid

Source: Wikipedia, the free encyclopedia.

Mild hybrids (MHEV) (also known as smart hybrids, power-assist hybrids, battery-assisted hybrid vehicles or BAHVs) are generally

regenerative braking and some level of power assist to the internal combustion engine.[1][2][3]

Overview

The mild hybrid's electric motor provides greater efficiency through the use of a single device that is essentially an integrated starter/alternator sometimes known as a generator-motor unit. A typical mild-hybrid setup uses a belt-powered generator-motor unit driven off the engine to supply power to a small battery. The generator is also powered through regenerative braking, enabling power that would otherwise be dissipated as heat to be recaptured and recovered for use in powering the vehicle. The small power assist generated by mild-hybrid systems can help supplement the internal combustion engine in low-speed situations or handle the demands of engine start/stop functionality. Vehicles equipped with a mild-hybrid system typically see anywhere from a 0.4 to 1.7 km/l improvement in fuel economy relative to comparable models without the technology.[4]

Dual mild hybrids

These contain two different energy recovery systems.

The

motor–generator unit (MGU-H).[5][6]

Criticisms

There is doubt on whether mild hybrids should be classified as hybrid or have EV (electric vehicle) in their MHEV abbreviation as they cannot be powered only by electricity at any time.[7] Their emissions reduction is often so low that the impact on environment is negligible and maybe seen as greenwashing.[8]

Examples

General Motors

BAS Hybrid system delivers a 27% improvement in combined fuel economy over the non-hybrid version (FWD 4cyl).[10]

Others

Toyota Crown Sedan
Super Deluxe Mild Hybrid

During the 2008 Olympic Games in Beijing in August, Chinese automobile manufacturer

Infineon.[11]

Crown Sedan between 2002 and 2008 in the Japanese domestic market.[12][13] These models combined a BAS hybrid system with the standard straight-6 petrol engines for increased fuel economy. Toyota now sells a full hybrid version of the Crown under their brand name Hybrid Synergy Drive.[citation needed
]

MINI and BMW have start and stop, and some with regenerative braking, in all of their vehicles sold in Europe running 4-cylinder engines with manual transmissions.[14]

ultracapacitors for energy buffering.[16]

In 2004

VW brought two mild hybrid concept cars to Shanghai for the Challenge Bibendum.[17]

Suzuki has announced the Suzuki Baleno with integrated SHVS-technology in 2016 on the new Suzuki HEARTECT platform. Suzuki has had experience with this mild-hybrid technology in their Suzuki Ciaz.[citation needed]

Most hybrids use gasoline engines, but some use Diesel engines, such as the Hyundai 1.6.[18] In 2021 Land Rover started selling the Range Rover Sport D350 which runs on the 3.0-litre D300 Ingenium Diesel engine.[19][20][21][22][23]

The Genesis G90 and Genesis GV80 Coupe offer mild hybrid options with an electric supercharger.[24][25]

See also

References

  1. ^ "Pilot Project MOVELE: An initiative of the IDAE in favour of energy efficiency in transport" (PDF). Archived from the original (PDF) on 2009-05-30. Retrieved 2013-08-09.
  2. ^ Sam Abuelsamid (2009-04-03). "What is a mild hybrid?". AutoblogGreen. Retrieved 2010-03-22.
  3. ^ "Maruti Suzuki Ciaz Hybrid / SHVS working - All you need to know". Indian Car News. 2015-08-25. Retrieved 2017-01-01.
  4. ^ "Types of Mild Hybrid Electric Vehicles (MHEV) – x-engineer.org".
  5. ^ "New 442bhp Mercedes-AMG CLE53: double turbos, six cylinders, all-wheel drive". CAR Magazine.
  6. ^ https://www.roadandtrack.com/car-culture/a42821665/how-electric-turbochargers-are-changing-internal-combustion/
  7. ^ "Don't be fooled! Mild hybrids aren't 'real' hybrids - the term for the minor fuel-saving technology is just a (really) bad marketing joke | Opinion". CarsGuide. Retrieved 2024-04-11.
  8. ^ Frankland, Olly (2021-07-21). "The rise of the mild hybrid – a steppingstone technology or greenwash? - Regen". Retrieved 2024-04-11.
  9. ^ "MIT/Industry Consortium on Advanced Automotive Electrical/Electronic Components and Systems". 2004-09-17. Archived from the original on 2004-09-17.
  10. ^ "Compare Cars Side-by-Side". Fueleconomy.gov. Retrieved 2017-01-01.
  11. ^ "News | Electronics EETimes". Eetimes.eu. Retrieved 2017-01-01.
  12. ^ "History of Toyota - 75 years - Crown vehicle lineage". Toyota. Retrieved 2022-01-27.
  13. ^ "The Widespread Introduction of the TOYOTA Mild Hybrid Cars (HEV) May Promote an Earlier Introduction of 42V Cars". 2009-10-23. Archived from the original on 2009-10-23.
  14. ^ "Reliance Electric FlexPak 3000 40FR4042 | Automation Industrial". 40fr4042.com. Retrieved 2023-12-16.
  15. ^ "Citroën.com, the International website of Citroën". Citroen.com. Archived from the original on 2013-10-29. Retrieved 2017-01-01.
  16. ^ "Citroën.com, the International website of Citroën". Citroen.com. Archived from the original on 2013-10-29. Retrieved 2017-01-01.
  17. ^ "VW Brings Diesel Mild-Hybrid Concept to Shanghai". Green Car Congress. 2004-10-13. Retrieved 2017-01-01.
  18. ^ Panait, Mircea (2019-03-29). "Here's How the Hyundai Mild-Hybrid 1.6 CRDi Turbo Diesel Works". autoevolution.
  19. ^ "Land Rover Defender gains plug-in hybrid electric power, six-cylinder diesel and new X-Dynamic model" (Press release). UK: Land Rover. 2020-09-09. Retrieved 2024-01-02.
  20. ^ "Land Rover adds hybrid diesel model to plug-in electric Range Rover". 2020-07-15.
  21. ^ "Range Rover Sport Hybrid Review".
  22. ^ "2022 Range Rover Sport D300 First Drive: The Right Diesel Engine at the Wrong Time". 2022-01-04.
  23. ^ "2021 Range Rover - new 3.0 litre mild-hybrid diesel engine, limited edition Westminster editions launched". paultan.org. 2020-07-15.
  24. ^ "2023 Genesis G90 In US Getting Mild-Hybrid V6 With Electric Supercharger". Motor1.com.
  25. ^ "Big Genesis GV80 SUV gets sporty GV80 Coupe variant, and a facelift". Auto Express.
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