Suzuki K engine

The Suzuki K engine family is a series of all aluminium inline-three or four cylinder automobile engines from Suzuki, introduced in 1994. The displacement is ranging from 0.7 L to 1.5 L. This is a timing chain head driven DOHC 4-valve per cylinder engine with VVT and using multipoint fuel injection or direct injection fuel system.

Suzuki K engine
Suzuki K15B engine
Overview
ManufacturerSuzuki
Production1994–present
Layout
ConfigurationInline-three engine
Inline-four engine
Displacement
  • 658 cc (0.7 L; 40.2 cu in)
  • 996 cc (1.0 L; 60.8 cu in)
  • 998 cc (1.0 L; 60.9 cu in)
  • 1,171 cc (1.2 L; 71.5 cu in)
  • 1,197 cc (1.2 L; 73.0 cu in)
  • 1,242 cc (1.2 L; 75.8 cu in)
  • 1,373 cc (1.4 L; 83.8 cu in)
  • 1,462 cc (1.5 L; 89.2 cu in)
Cylinder bore
  • 68 mm (2.68 in)
  • 71 mm (2.80 in)
  • 73 mm (2.87 in)
  • 74 mm (2.91 in)
Piston stroke
  • 60.4 mm (2.38 in)
  • 68.6 mm (2.70 in)
  • 71.5 mm (2.81 in)
  • 74 mm (2.91 in)
  • 74.2 mm (2.92 in)
  • 79.5 mm (3.13 in)
  • 82 mm (3.23 in)
  • 83 mm (3.27 in)
  • 85 mm (3.35 in)
Block materialAluminium
Head materialAluminium
ValvetrainDOHC 4 valves x cyl. with VVT (since 1999)[1]
Timing drive systemChain
Compression ratio8.4–13.0:1
RPM range
Redline6200–8500 rpm
Combustion
Fuel systemMultipoint fuel injection or Direct injection
Fuel typePetrol
CNG
Cooling systemWater-cooled
Output
Power output37–140 PS (36–138 hp; 27–103 kW)
Torque output55–235 N⋅m (6–24 kg⋅m; 41–173 lb⋅ft)
Chronology
PredecessorSuzuki F engine
Suzuki G engine (G10A/B)
Suzuki M engine
SuccessorSuzuki R engine (K6A)

Since 2013,[2] some of K engine range has been upgraded with several new technologies. The upgrades including new two injectors per cylinder, smaller compression chamber, increasing the compression ratio, improving the thermal efficiency, redesigned water jacket shape, adding piston cooling oil jets, adoption of water-cooled EGR system and several other changes for fuel efficiency, this technology is known as Dualjet.[3] The direct injection with turbocharger variant is called Boosterjet.[4][5]

Furthermore, a start-stop mild hybrid technology with 12 or 42-volt electrical system known as Smart Hybrid Vehicle by Suzuki (SHVS) is also available for markets with stricter emission regulation, such as in Europe, Japan and India. This mild hybrid technology is helping to increase fuel mileage, providing optional acceleration and also reduce the emissions.[6][7]

Three-cylinder

K6A
Suzuki K6A turbo with Jatco JF012E CVT transmission

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

Technical specifications:

  • Displacement: 658 cc (0.7 L; 40.2 cu in)
  • Bore and stroke: 68 mm × 60.4 mm (2.68 in × 2.38 in)
  • Valvetrain: Chain driven, DOHC, 12 valve, with or without VVT
  • Compression ratio: 8.4–8.9 (turbo), 10.5 (NA)
  • Maximum power:
    • 37–54 PS (27.2–39.7 kW; 36.5–53.3 hp) at 5500–6500 rpm (NA)
    • 60–64 PS (44.1–47.1 kW; 59.2–63.1 hp) at 6000–6500rpm (turbo)
    • 50 PS (36.8 kW; 49.3 hp) at 6500 rpm (CNG)
  • Maximum torque:
    • 55–63 N⋅m (5.6–6.4 kg⋅m; 40.6–46.5 lb⋅ft) at 3500–4000 rpm (NA)
    • 83–108 N⋅m (8.5–11.0 kg⋅m; 61.2–79.7 lb⋅ft) at 3000–3500rpm (turbo)
    • 58 N⋅m (5.9 kg⋅m; 42.8 lb⋅ft) at 3500 rpm (CNG)

Applications:

K10B
Suzuki K10B engine

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 has increased petrol mileage over 23km/l, achieved maximum power on lower rev and reduced frictional losses.[9] CNG variant also available for Indian domestic market.

Technical specifications:

  • Displacement: 998 cc (1.0 L; 60.9 cu in)
  • Bore and stroke: 73 mm × 79.4 mm (2.87 in × 3.13 in)
  • Valvetrain: Chain driven, DOHC, 12 valve, without VVT
  • Compression ratio: 10.0–11.0
  • Maximum power: 68 PS (50.0 kW; 67.1 hp) at 6200 rpm
  • Maximum torque: 90 N⋅m (9.2 kg⋅m; 66.4 lb⋅ft) at 3500 rpm

Applications:

K10C
Naturally aspirated K10C engine for European market Suzuki Celerio

Reworked version of K10B engine with naturally aspirated Dualjet or direct injection with turbocharger 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.

Technical specifications:

  • Displacement: 998 cc (1.0 L; 60.9 cu in)
  • Bore and stroke: 73 mm × 79.4 mm (2.87 in × 3.13 in)
  • Valvetrain: Chain driven, DOHC, 12 valve, with VVT
  • Compression ratio: 10.0 (turbo), 12.0 (NA)
  • Maximum power:
    • 68 PS (50.0 kW; 67.1 hp) at 6000 rpm (NA)
    • 99–111 PS (72.8–81.6 kW; 97.6–109.5 hp) at 5500 rpm (turbo)
  • Maximum torque:
    • 93 N⋅m (9.5 kg⋅m; 68.6 lb⋅ft) at 3500 rpm (NA)
    • 150–170 N⋅m (15.3–17.3 kg⋅m; 110.6–125.4 lb⋅ft) at 1500–4500 rpm (turbo)

Applications:

Four-cylinder

K10A

The four-cylinder 1.0-litre version of K engine, with or without VVT and available in naturally aspirated or turbocharged form.

Technical specifications:

  • Displacement: 996 cc (1.0 L; 60.8 cu in)
  • Bore and stroke: 68 mm × 68.6 mm (2.68 in × 2.70 in)
  • Valvetrain: Chain driven, DOHC, 16 valve, with or without VVT
  • Compression ratio: 8.4 (turbo), 10.0 (NA)
  • Maximum power:
    • 65–70 PS (47.8–51.5 kW; 64.1–69.0 hp) at 6500-7000 rpm (NA)
    • 100 PS (73.5 kW; 98.6 hp) at 6500 rpm (turbo)
  • Maximum torque:
    • 88 N⋅m (9.0 kg⋅m; 64.9 lb⋅ft) 3500 rpm (NA)
    • 118 N⋅m (12.0 kg⋅m; 87.0 lb⋅ft) at 4000 rpm (turbo)

Applications:

K12A

Technical specifications:

  • Displacement: 1,172 cc (1.2 L; 71.5 cu in)
  • Bore and stroke: 71 mm × 74 mm (2.80 in × 2.91 in)
  • Valvetrain: Chain driven, DOHC, 16 valve, without VVT
  • Compression ratio: 9.3
  • Maximum power:
    • 69 PS (50.7 kW; 68.1 hp) at 6000 rpm
  • Maximum torque:
    • 95 N⋅m (9.7 kg⋅m; 70.1 lb⋅ft) 3250 rpm

Applications:

K12B

First appeared in 2009 and reworked with Dualjet technology in 2013.[2]

Suzuki K12B Dualjet engine

Technical specifications:

  • Displacement: 1,242 cc (1.2 L; 75.8 cu in)
  • Bore and stroke: 73 mm × 74.2 mm (2.87 in × 2.92 in)
  • Valvetrain: Chain driven, DOHC, 16 valve, VVT
  • Compression ratio: 11.0
  • Maximum power:
    • 90 PS (66.2 kW; 88.8 hp) at 6000 rpm
  • Maximum torque:
    • 118 N⋅m (12.0 kg⋅m; 87.0 lb⋅ft) 4400 rpm

Applications:

K12C

The reworked Dualjet version of K12B engine and can also combined with 12-volt SHVS mild hybrid technology and 3Ah Lithium Ion Battery[10] or a parallel hybrid system with 10 kW Motor Generator Unit (MGU).[11][12]

Technical specifications:

  • Displacement: 1,242 cc (1.2 L; 75.8 cu in)
  • Bore and stroke: 73 mm × 74.2 mm (2.87 in × 2.92 in)
  • Valvetrain: Chain driven, DOHC, 16 valve, Dual VVT
  • Compression ratio: 12.5
  • Maximum power:
    • 91 PS (66.9 kW; 89.8 hp) at 6000 rpm
  • Maximum torque:
    • 118 N⋅m (12.0 kg⋅m; 87.0 lb⋅ft) 4400 rpm

Applications:

K12D

Replacing the previous K12C Dualjet engine for European market, as the European emission standard has moved to Euro 6d stage. The displacement is slightly down similar to K12N Dualjet engine but with higher 13.0 compression ratio. The SHVS mild hybrid system become standard and also improved with a bigger 10Ah Lithium Ion Battery.[10]

Technical specifications:

  • Displacement: 1,197 cc (1.2 L; 73.0 cu in)
  • Bore and stroke: 73 mm × 71.5 mm (2.87 in × 2.81 in)
  • Valvetrain: Chain driven, DOHC, 16 valve, Dual VVT
  • Compression ratio: 13.0
  • Maximum power:
    • 83 PS (61.0 kW; 81.9 hp) at 6000 rpm
  • Maximum torque:
    • 107 N⋅m (10.9 kg⋅m; 78.9 lb⋅ft) 2000 rpm

Applications:

K12M
Suzuki K12M engine

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.

Technical specifications:

  • Displacement: 1,197 cc (1.2 L; 73.0 cu in)
  • Bore and stroke: 73 mm × 71.5 mm (2.87 in × 2.81 in)
  • Valvetrain: Chain driven, DOHC, 16 valve, VVT
  • Compression ratio: 10.5
  • Maximum power:
    • 83 PS (61.0 kW; 81.9 hp) at 6000 rpm
  • Maximum torque:
    • 113 N⋅m (11.5 kg⋅m; 83.3 lb⋅ft) 4000 rpm

Applications:

K12N

Reworked version of K12M engine with Dualjet and SHVS mild hybrid technology.

Technical specifications:

  • Displacement: 1,197 cc (1.2 L; 73.0 cu in)
  • Bore and stroke: 73 mm × 71.5 mm (2.87 in × 2.81 in)
  • Valvetrain: Chain driven, DOHC, 16 valve, Dual VVT
  • Compression ratio: 12.0
  • Maximum power:
    • 90 PS (66.2 kW; 88.8 hp) at 6000 rpm
  • Maximum torque:
    • 113 N⋅m (11.5 kg⋅m; 83.3 lb⋅ft) 4200 rpm

Applications:

K14B

Technical specifications:

  • Displacement: 1,372 cc (1.4 L; 83.7 cu in)
  • Bore and stroke: 73 mm × 82 mm (2.87 in × 3.23 in)
  • Valvetrain: Chain driven, DOHC, 16 valve, VVT
  • Compression ratio: 10.0–11.0
  • Maximum power:
    • 92–101 PS (67.7–74.3 kW; 90.7–99.6 hp) at 5900–6000 rpm
  • Maximum torque:
    • 115–138 N⋅m (11.7–14.1 kg⋅m; 84.8–101.8 lb⋅ft) 3200–4800 rpm

Applications:

K14C
Tuned Suzuki K14C engine

Reworked K14B engine with direct injection and turbocharger Boosterjet technology.

Technical specifications:

  • Displacement: 1,372 cc (1.4 L; 83.7 cu in)
  • Bore and stroke: 73 mm × 82 mm (2.87 in × 3.23 in)
  • Valvetrain: Chain driven, DOHC, 16 valve, VVT
  • Compression ratio: 9.9
  • Maximum power:
    • 140 PS (103.0 kW; 138.1 hp) at 5500 rpm
  • Maximum torque:
    • 220–230 N⋅m (22.4–23.5 kg⋅m; 162.3–169.6 lb⋅ft) at 1500–4000 rpm

Applications:

K14D

Reworked K14C Boosterjet engine for European market. Combined with a 48-volt SHVS mild hybrid technology and a 8Ah Lithium Ion Battery to pass Euro 6d emission standard.[19]

Technical specifications:

  • Displacement: 1,372 cc (1.4 L; 83.7 cu in)
  • Bore and stroke: 73 mm × 82 mm (2.87 in × 3.23 in)
  • Valvetrain: Chain driven, DOHC, 16 valve, VVT
  • Compression ratio: 10.8
  • Maximum power:
    • 129 PS (94.9 kW; 127.2 hp) at 5500 rpm
  • Maximum torque:
    • 235 N⋅m (24.0 kg⋅m; 173.3 lb⋅ft) 2000 rpm

Applications:

K15B
Suzuki K15B engine

The biggest engine in the range. SHVS mild hybrid sistem also available and claimed over 17% more fuel efficient that the non-SHVS engine.[20]

Technical specifications:

  • Displacement: 1,462 cc (1.5 L; 89.2 cu in)
  • Bore and stroke: 74 mm × 85 mm (2.91 in × 3.35 in)
  • Valvetrain: Chain driven, DOHC, 16 valve, VVT
  • Compression ratio: 10.0–10.5
  • Maximum power:
    • 102–106 PS (75.0–78.0 kW; 100.6–104.5 hp) at 6000 rpm
    • 92 PS (67.7 kW; 90.7 hp) at 6000 rpm (CNG)
  • Maximum torque:
    • 130–138 N⋅m (13.3–14.1 kg⋅m; 95.9–101.8 lb⋅ft) 4000–4400 rpm
    • 122 N⋅m (12.4 kg⋅m; 90.0 lb⋅ft) 4400 rpm (CNG)

Applications:

K15B-C
Suzuki K15B-C engine

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 K15B, different intake manifold port position, shorter camshaft profile, lower compression ratio pistons, different chain cover design (similar to previous generation Suzuki Carry) and different oil pan shape.[21]

Technical specifications:

  • Displacement: 1,462 cc (1.5 L; 89.2 cu in)
  • Bore and stroke: 74 mm × 85 mm (2.91 in × 3.35 in)
  • Valvetrain: Chain driven, DOHC, 16 valve, without VVT
  • Compression ratio: 10.0
  • Maximum power:
    • 97 PS (71.3 kW; 95.7 hp) at 5600 rpm
  • Maximum torque:
    • 135 N⋅m (13.8 kg⋅m; 99.6 lb⋅ft) 4400 rpm

Application:

See also

References
  1. "スズキ ワゴンR". www.carsensor.net (in Japanese).
  2. "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]. www.webcg.net (in Japanese). 2013-09-23. Retrieved 2020-12-06.
  3. Kumar, Sukrit. "What Makes The 2020 Maruti Suzuki Dzire's K12C Dualjet Engine So Efficient?". www.zigwheels.com.
  4. "Meet the Suzuki BOOSTERJET engine (video)". SuzukiCarsUK.
  5. "BOOSTERJET Technology". www.suzuki.co.nz.
  6. "SHVS mild hybrid + DUALJET (Video)". Suzuki Global (YouTube).
  7. "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－". Suzuki (Press release). 22 January 2003. Retrieved 25 September 2020.
  9. "K-Next engine for mileage conscious buyer, says Maruti". www.economictimes.com. 2014-02-07.
  10. "Retro refresh: Suzuki Ignis updated for 2020". www.carmagazine.co.uk. 2020-03-03.
  11. "Suzuki Launches New Solio and Solio Bandit Compact Cars Equipped with Hybrid System in Japan". www.globalsuzuki.com. 2016-10-29.
  12. M., Surendhar (2017-07-15). "New Suzuki Swift Hybrid Launched in Japan". gaadiwaadi.com.
  13. "Splash from Changhe Suzuki". chinaautoweb.com.
  14. "Suzuki Landy from Changhe-Suzuki". chinaautoweb.com.
  15. "沈阳车展 长安全新CX20全方位蜕变上市". www.shenyangauto.net (in Chinese). 2013-10-29.
  16. "Suzuki Liana CH7143CD27 Car (#270)". auto-che.com.
  17. "Changhe Freedom M50". www.chinamobil.ru.
  18. Bubear, Ryan (2020-09-03). "Confirmed! New Toyota Starlet (a rebadged Suzuki) to launch in SA soon". www.carmag.co.za.
  19. Parikh, Sagar (2020-01-26). "Exclusive: Maruti Suzuki 48V SHVS smart hybrid system new details revealed". www.indianautosblog.com.
  20. "THE POWERFUL K-SERIES ENGINE". www.marutisuzuki.com.
  21. "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 (in Indonesian).
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