Suzuki K engine explained

Suzuki K engine
Manufacturer:Suzuki
Production:1994–present
Redline:6200–8500 rpm
Block:Aluminium
Head:Aluminium
Valvetrain:DOHC 4 valves per cylinder with VVT (since 1999)[1]
Turbocharger:IHI, Mitsubishi
Fuelsystem:multipoint fuel injection or direct injection
Oilsystem:Wet sump
Coolingsystem:Water-cooled
Power:NaNPS
Torque:NaNNm
Timing:Timing Chain
Compression:8.4–13.0:1
Successor:Suzuki R engine

The Suzuki K engine family is a series of automobile engines from Suzuki, introduced in 1994. Displacements range from 0.7 L to 1.5 L. All engines have aluminium cylinder blocks with three or four cylinders in-line. Cylinder heads have two overhead camshafts, driven by chain, and four valves per cylinder. Fuel is gasoline/petrol, metered by multipoint fuel injection or direct injection. Some variants are turbocharged.

Since 2013, some of the K engines range have been upgraded with Dualjet technology.[2] The upgrades include new two injectors per cylinder, increased compression ratio (improving the thermal efficiency), redesigned water jacket shape, piston cooling by oil jets, water-cooled EGR system and several other changes for fuel efficiency.[3] The turbocharged variant with direct injection fuel system is called Boosterjet.[4] [5]

Furthermore, a mild hybrid technology with 12 or 48-volt Integrated Motor Generator (ISG) dubbed as Smart Hybrid Vehicle by Suzuki (SHVS) is available for markets with stricter emission regulation, such as Europe, Japan, Singapore and India. This mild hybrid technology helps to increase fuel mileage, providing optional acceleration and also reduces emissions.[6] [7] A strong hybrid variant with Motor Generator Unit (MGU) is available in Europe and Japan.

Three-cylinder

K6A

This is the first K engine that appeared in 1994 and was discontinued in 2018. It is the smallest in the family and also the first K engine with VVT.[1] This engine was available in several versions, such as naturally aspirated, turbocharged, lean-burn, CNG and strong hybrid. The hybrid version was also the first hybrid engine in the kei car class and only available for Suzuki Twin.[8]

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K10B

The three-cylinder 1.0-litre version of K engine, fitted in many Suzuki's city cars since 2008. In 2014, this engine was reworked by increasing the compression ratio from 10.0 to 11.0:1 and known as K-Next. This changes claimed to increase the petrol mileage over 23km/L, achieved maximum power on lower rev and reduced frictional losses.[9] CNG variant also available for Indian domestic market.

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K10C

Reworked version of K10B engine with naturally aspirated Dualjet or turbocharged direct injection Boosterjet technology. The compression ratio was increased from 11.0:1 to 12.0:1 for more thermal efficiency and reduced frictional losses. Suzuki's SHVS mild hybrid system is available for this engine in European and Japanese market. The CNG version is also available for Indian market.

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Four-cylinder

K10A

The smallest four-cylinder K-series engine.

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K12A

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K12B

Appeared first in 2008 and reworked with Dualjet technology in 2013.[2] In China, this engine was also used by Suzuki's former joint venture partners, Changan Suzuki and its subsidiaries. Known under E-Power EA12[10] or JL473Q[11] names.Technical specifications:

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K12C

The Dualjet version of K12B engine and can also combined with 12-volt SHVS mild hybrid technology[12] or a strong hybrid system with Motor Generator Unit (MGU).[13] [14]

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K12D

Replacing the previous K12C Dualjet engine for European (and several other markets), as the European emission standard has moved to Euro 6d stage. The displacement is the same as K12M and K12N Dualjet engines. The SHVS mild hybrid system is also standard.[12]

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K12M

Destroked version of the K12B, developed by Maruti Suzuki. Mainly for the Indian market as the country imposed higher excise tax for petrol engines larger than 1,200 cc. This engine is also available for markets in South East Asia, South America and Africa; in 2020 the K12D derivative was developed from this.

VVT technology was added for this engine in 2012. In February 2018, the Dualjet version was introduced first in Thailand with higher 11.5:1 compression ratio.[15] [16]

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K12N

Dualjet version of K12M engine and also available with SHVS mild hybrid technology. A version for commercial vehicles with lower output is also available.

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K14B

Similar as K12B, this engine was also used by Suzuki's former joint venture partner in China. Known under E-Power EA14[10] or JL473Q1[17] names.

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K14C

Boosterjet version of K14B engine with direct injection and turbocharger. This engine is no longer available since mid-2020 for European market and replaced by K14D Boosterjet mild hybrid engine.

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K14D

Reworked K14C Boosterjet engine for European market. Combined with a 48-volt SHVS mild hybrid technology to pass Euro 6d emission standard.[24]

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K15B

The biggest engine in the range. SHVS mild hybrid system also available and claimed over 17% more fuel efficient that the non-SHVS engine.[25]

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K15B-C

This engine is similar as the regular K15B, but designed for commercial use. The differences are including different cylinder head cover made from metal with 7 bolts instead of resin material with 12 bolts on the regular K15B engine, different intake manifold position, shorter camshaft profile, lower compression ratio pistons, different timing chain cover design without engine mount (similar as previous generation Suzuki Carry) and different oil pan shape.[26]

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Application:

K15C

Dualjet version of K15B engine, it is available in Europe and Japan with 140V strong hybrid combined to a Motor Generator Unit (MGU). Mild hybrid and CNG version is also available, the latter is only available in India.

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Application:

See also

Notes and References

  1. Web site: スズキ ワゴンR. ja. www.carsensor.net.
  2. Web site: スズキ・スイフトXS-DJE（FF/CVT） - 真面目グルマの秘密兵器. Suzuki Swift XS-DJE (FF/CVT) - Serious Gurma's Secret Weapon. ja. 2013-09-23. 2020-12-06. www.webcg.net.
  3. Web site: What Makes The 2020 Maruti Suzuki Dzire's K12C Dualjet Engine So Efficient?. Sukrit. Kumar. www.zigwheels.com.
  4. Web site: Meet the Suzuki BOOSTERJET engine (video). SuzukiCarsUK.
  5. Web site: BOOSTERJET Technology. www.suzuki.co.nz.
  6. Web site: SHVS mild hybrid + DUALJET (Video). Suzuki Global (YouTube).
  7. Web site: SMART HYBRID TECHNOLOGY. www.marutisuzuki.com.
  8. 経済的・実用的な２シーター軽乗用車「ツイン」発売－軽自動車として初めてハイブリッドシステム搭載車を発売－. 22 January 2003. 25 September 2020. Suzuki.
  9. News: K-Next engine for mileage conscious buyer, says Maruti. https://web.archive.org/web/20220604193937/https://economictimes.indiatimes.com/k-next-engine-for-mileage-conscious-buyer-says-maruti/articleshow/30007466.cms . 2022-06-04 . 2014-02-07. The Economic Times.
  10. Web site: 长安CX20全新改款上市 动力更加给力. Chinese. m.autohome.com.cn.
  11. Web site: Changan SC1027SA. auto-che.com.
  12. Web site: Retro refresh: Suzuki Ignis updated for 2020. 2020-03-03. www.carmagazine.co.uk.
  13. Web site: Suzuki Launches New Solio and Solio Bandit Compact Cars Equipped with Hybrid System in Japan. 2016-10-29. www.globalsuzuki.com.
  14. Web site: New Suzuki Swift Hybrid Launched in Japan. Surendhar. M.. 2017-07-15. gaadiwaadi.com.
  15. News: NEW Suzuki Swift 1.2 Dual JET จะมีให้เลือก 4 รุ่นย่อย 6 สีตัวถัง เตรียมเปิดตัวในไทย 8 ก.พ. นี้. NEW Suzuki Swift 1.2 Dual JET will be available in 4 variants and 6 body colors and to be launched in Thailand on 8 February. 7 February 2018. 12 February 2021. th . www.headlightmag.com.
  16. ซูซูกิ สวิฟท์ ใหม่ ฟีเว่อร์ ! สร้างปรากฎการณ์ใหม่ 1 เดือน ยอดจองทะลุ 3,000 คัน ลูกค้าเชื่อมั่นเทคโนโลยี DualJet Engine และ แพลตฟอร์มใหม่ Heartect มาพร้อมความคุ้มค่าโดนใจ. Suzuki Swift New Fever! Create a new phenomenon for a month, bookings has surpass 3,000 vehicles, customers trust the new DualJet engine technology and the new Heartect platform with great value. 12 February 2021. th . www.suzuki.co.th.
  17. Web site: Changan SC7144AH4. auto-che.com.
  18. Web site: Splash from Changhe Suzuki. chinaautoweb.com.
  19. Web site: Suzuki Landy from Changhe-Suzuki. chinaautoweb.com.
  20. Web site: 沈阳车展 长安全新CX20全方位蜕变上市. zh. 2013-10-29. www.shenyangauto.net.
  21. Web site: Suzuki Liana CH7143CD27 Car (#270). auto-che.com.
  22. Web site: Changhe Freedom M50. www.chinamobil.ru.
  23. Web site: Confirmed! New Toyota Starlet (a rebadged Suzuki) to launch in SA soon. Ryan. Bubear. 2020-09-03. www.carmag.co.za.
  24. Web site: Exclusive: Maruti Suzuki 48V SHVS smart hybrid system new details revealed. Sagar. Parikh. 2020-01-26. www.indianautosblog.com.
  25. Web site: THE POWERFUL K-SERIES ENGINE. www.marutisuzuki.com.
  26. Web site: Apa Beda Mesin Suzuki New Carry Pick Up dan New Ertiga?. What The Differences Between The New Suzuki Carry Pick Up and New Ertiga Engine?. www.otoplus-online.com. 7 June 2019. id.

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