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Toyota Dynamic Force engine

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Toyota Dynamic Force engine
Toyota's A25A-FKS engine
Overview
ManufacturerToyota
Production2017–present
Layout
Configuration
Displacement1,490–3,444 cc (90.9–210.2 cu in)
Cylinder block materialAluminium alloy
Cylinder head materialAluminium alloy
ValvetrainDOHC
Combustion
Fuel typePetrol/petrol hybrid
Cooling systemWater-cooled

The Toyota's Dynamic Force engines are an petrol engine series developed by Toyota under the brand's New Global Architecture (TNGA) strategy.

Overview

The engine was developed as an engine that is claimed to achieve both driving performance and environmental performance, while pursuing high efficiency and low fuel consumption as well as having a direct feeling and smooth and pleasant acceleration performance.

Specifically, the engine is focusing on improving the tumble flow (longitudinal vortex) to increase the air intake volume. Other methods include:

  • Expansion of the valve clamping angle.
  • Longer bore and stroke ratio.
  • Change of port end shape and expansion of seat inner diameter.
  • Application of updated D-4S (multi-hole injector) system to achieve "high-speed combustion", resulting in combustion efficiency over 40%.

In development and production of the engine, Toyota claims it would be a completely new engine design based on the TNGA strategy. Up to today, it is illustrated that the engine standards that have become enormous in proportion to the displacement and regulations of each country have been arranged.

Starting with the four-cylinder A25A type installed in XV70 series Camry in June 2017, the V6 V35A and four-cylinder M20A types have also appeared. On 16 October 2019, the three-cylinder M15A type, which is scheduled to be installed in the fourth generation Yaris (specially designed for Japan), was officially announced.[1]

Common key technologies

  • High speed combustion technologies:
    • Long stroke (stroke/bore ≒ 1.2)
    • Wider angle between the intake and exhaust valve
    • High efficiency intake port with laser cladded valve seat
    • High compression ratio up to 14.0:1
    • High energy ignition coil
    • Updated D-4S system
    • Multi-hole direct injector
  • Variable cooling system:
    • Motor driven water pump
    • Heated thermostat
  • Continuous variable-capacity oil pump
  • Low viscosity engine oil
  • Water jacket spacer
  • Piston with laser pit skirt
  • Drilled passage between cylinder bores
  • VVT-iE
  • Small-concave-profile camshaft
  • Compact HLA
  • High strength connecting rod
  • High response intake air control
  • Fuel injection control (multi-injection)
  • Cylinder heads with built-in EGR cooler function
  • Updated catalyst
  • Exhaust manifold layout change
  • Piston oil jet control

M15A

M15A
Overview
Production2019–present
Layout
ConfigurationI3
Displacement1,490 cc (90.9 cu in)
Cylinder bore80.5 mm (3.169 in)
Piston stroke97.6 mm (3.843 in)
Compression ratio
  • 13.0:1 (M15A-FKS)
  • 14.0:1 (M15A-FXE)
Combustion
Fuel systemD-4S direct/port injection (M15A-FKS)
Fuel type
  • Petrol (M15A-FKS)
  • Petrol hybrid (M15A-FXE)
Chronology
Predecessor

The M15A engine family is an inline-three engine series that was first introduced in 2019 for the fourth generation Yaris.[1]

M15A-FKS

The standard version with 13.0:1 compression ratio achieving 40% combustion efficiency.

Applications:

M15A-FXE

The hybrid version with 14.0:1 compression ratio achieving 41% combustion efficiency.

Applications:

M20A

M20A
M20A-FKS engine in the 2019 Corolla hatchback
Overview
Production2018–present
Layout
ConfigurationI4
Displacement1,986 cc (121.2 cu in)
Cylinder bore80.5 mm (3.169 in)
Piston stroke97.6 mm (3.843 in)
Compression ratio
  • 13.0:1 (M20A-FKS)
  • 14.0:1 (M20A-FXS)
Combustion
Fuel systemD-4S direct/port injection (M20A-FKS)
Fuel type
  • Petrol (M20A-FKS)
  • Petrol hybrid (M20A-FXS)
Output
Power output
  • 125–128 kW (168–172 hp; 170–174 PS) (M20A-FKS)
  • 107 kW (143 hp; 145 PS) (M20A-FXS)
Specific power
  • 62.9–64.5 kW (84–86 hp; 86–88 PS) per litre (M20A-FKS)
  • 53.9 kW (72 hp; 73 PS) per litre (M20A-FXS)
Torque output
  • 200–209 N⋅m (148–154 lb⋅ft) (M20A-FKS)
  • 180–188 N⋅m (133–139 lb⋅ft) (M20A-FXS)
Emissions
Emissions control systemsULEV50
Chronology
Predecessor

The M20A engine family is an inline-four engine series that was first introduced in 2018 for the E210 series Corolla.

M20A-FKS

The standard version with 13.0:1 compression ratio achieving 40% combustion efficiency.

Applications:

M20A-FXS

The hybrid version with 14.0:1 compression ratio achieving 41% combustion efficiency.[2]

Applications:

A25A

A25A
A25A-FXS engine in the 2018 Crown Hybrid
Overview
Production2017–present
Layout
ConfigurationI4
Displacement2,487 cc (151.8 cu in)
Cylinder bore87.5 mm (3.445 in)
Piston stroke103.4 mm (4.071 in)
Compression ratio
  • 13.0:1 (A25A-FKS/A25A-FKB)
  • 14.0:1 (A25A-FXS)
Combustion
Fuel systemD-4S direct/port injection (A25A-FKS)
Fuel type
  • Petrol (A25A-FKS)
  • Petrol hybrid (A25A-FXS)
Output
Power output
  • 152 kW (204 hp; 207 PS) (A25A-FKS)
  • 154 kW (207 hp; 209 PS) (A25A-FKB)
  • 131–135 kW (176–181 hp; 178–184 PS) (A25A-FXS)
Specific power
  • 61.1 kW (82 hp; 83 PS) per litre (A25A-FKS)
  • 61.9 kW (83 hp; 84 PS) per litre (A25A-FKB)
  • 52.7–54.3 kW (71–73 hp; 72–74 PS) per litre (A25A-FXS)
Torque output
  • 243–247 N⋅m (179–182 lb⋅ft) (A25A-FKS)
  • 250 N⋅m (180 lb⋅ft) (A25A-FKB)
  • 221–228 N⋅m (163–168 lb⋅ft) (A25A-FXS)
Chronology
Predecessor

The A25A engine family is an inline-four engine series that was first introduced in 2017 for the XV70 series Camry.

A25A-FKS

The standard version with 13.0:1 compression ratio achieving 40% combustion efficiency.

Applications:

A25A-FKB

Version used in Thailand with E85 ethanol fuel capable.[3]

Applications:

A25A-FXS

The hybrid version with 14.0:1 compression ratio achieving 41% combustion efficiency.[4][5]

Applications:

V35A

V35A
Overview
Production2017–present
Layout
Configuration60° V6
Displacement3,444 cc (210.2 cu in)
Cylinder bore85.5 mm (3.366 in)
Piston stroke100.0 mm (3.937 in)
Compression ratio10.5:1
Combustion
TurbochargerTwin turbo
Fuel systemD-4S
Fuel typePetrol
Output
Power output310 kW (416 hp; 421 PS)
Specific power90 kW (121 hp; 122 PS) per litre
Torque output600 N⋅m (440 lb⋅ft)
Chronology
Predecessor1UR-FE/1UR-FSE

The V35A engine is a V6 engine that was first introduced in 2017 for the XF50 series Lexus LS.

V35A-FTS

The twin-turbocharged version with 10.5:1 compression ratio. Pumping losses have been reduced by electrification of the waste gate of the twin turbo system. The engine achieves 41% combustion efficiency.

Applications:

References

  1. ^ a b "Toyota's New Model Yaris Makes World Premiere" (Press release). Japan: Toyota. 16 October 2019. Retrieved 15 November 2019.
  2. ^ "2.0-liter Dynamic Force Engine, a New 2.0-liter Direct-injection, Inline 4-cylinder Gasoline Engine" (Press release). Japan: Toyota. 26 February 2018. Retrieved 15 November 2019.
  3. ^ "อุปกรณ์มาตรฐานและข้อมูลทางเทคนิค CAMRY" [Standard equipment and technical data CAMRY]. Thailand: Toyota. 2019. Retrieved 16 November 2019.
  4. ^ "Attainable Premium, Actualized: All-New 2019 Toyota Avalon Beams Effortless Sophistication, Style, and Exhilaration at the 2018 North American International Auto Show" (Press release). Japan: Toyota. 15 January 2018. Retrieved 15 November 2019.
  5. ^ "2017 Toyota Camry Press Kit" (Press release). Australia: Toyota. 20 November 2017. Retrieved 15 November 2019.
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