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The Nissan KR engine family consists of three and four-cylinder all-aluminum turbocharged gasoline engines in both 12-valve and 16-valve versions with a variable compression ratio and variable valve timing developed by Nissan.

This article needs additional citations for verification. (March 2021)

Nissan KR engine
Overview
Manufacturer	Nissan
Production	2018–present
Layout
Configuration	I3 (KR15DDT and KH5T) I4 (KR20DDET)
Displacement	1,461 cc (1.5 L; 89.2 cu in) (KH5T) 1,497 cc (1.5 L; 91.4 cu in) (KR15DDT) 1,997 cc (2.0 L; 121.9 cu in) (KR20DDET)
Cylinder bore	84 mm (3.31 in) (permanent)
Piston stroke	90.1 mm (3.55 in) (8.0:1 compression) 88.9 mm (3.50 in) (14.0:1 compression)
Block material	Aluminum alloy
Head material	Aluminum alloy
Valvetrain	DOHC 4 valves per cylinder with VVT
Compression ratio	8.0:1~14.0:1
Combustion
Turbocharger	Yes
Fuel system	Direct-injection (GDI) (KR15DDT) Combined GDI and multi-point indirect injection (KR20DDET)
Fuel type	Gasoline
Cooling system	Water-cooled
Output
Power output	157 hp (159 PS; 117 kW) (KH5T) 201 hp (204 PS; 150 kW) (KR15DDT) 248–268 hp (251–272 PS; 185–200 kW) at 5,600 rpm (KR20DDET)
Torque output	240 N⋅m (177 lb⋅ft) (KH5T) 305 N⋅m (225 lb⋅ft) (KR15DDT) 370–380 N⋅m (273–280 lb⋅ft) at 1,600–4,800 rpm (KR20DDET)
Chronology
Predecessor	QR25DE (KR15DDT) (I4) PR25DD ("KR15DDT") (I4) VQ35DE (KR20DDET) (V6)

KH5T

This section possibly contains original research. (February 2021)

The KH5T is a 1.5 L (1461 cc) DIG-T (Direct Injection Gasoline-Turbocharged) inline-3 12-valve engine, with a bore x stroke of 79.7 mm × 81.1 mm (3.14 in × 3.19 in).^{[clarification needed]}. Power output is 157 bhp (159 PS; 117 kW) and 240 N⋅m (177 lb⋅ft) of torque.The variation in compression ratio ranges between 8:1 and 14:1. This is achieved by the movement of an actuator which changes the length of the piston stroke according to the demand for power.

Applications:

• 2022–present Nissan Qashqai e-Power 186 hp (189 PS; 139 kW) and 330nm

KR15DDT

The KR15DDT 3 cylinder engine is firstly introduced in the fourth-generation X-Trail.[1]

Applications:

• 2021–present Nissan Rogue/X-Trail (T33)

KR20DDET

The KR20DDET was announced at the 2016 Paris Motor Show as the VC Turbo which had Nissan's new variable compression technology. The engine was introduced to Nissan's production cars in 2019 in the Infiniti QX50 and the Nissan Altima replacing the previous V6 options.[2] It was touted as the world’s first production-ready variable compression ratio engine.[3]

Applications:

• 2017–present Infiniti QX50 (J55)
• 2021–present Infiniti QX55 (J55)
• 2022–present Infiniti QX60 (L51) (China)[4]
• 2018–present Nissan Altima (L34)

See also

• List of Nissan engines

References

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