It was first introduced in the Nissan Qashqai small SUV in 2021. The MR15DDT (KH5T) is a 1.5 L (1461 cc) DIG-T ( direct injection gasoline- turbocharged) inline-three engine, with a bore x stroke of 79.7 mm × 81.1 mm (3.14 in × 3.19 in). ( February 2021) ( Learn how and when to remove this template message) Statements consisting only of original research should be removed.
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The block becomes temporarily distorted until the head is torqued onto it, at which point the block is pulled into the correct shape. The MR engine family features 'under stress' manufacture, meaning while the block is being bored, a torque plate puts the block under stress. Other noteworthy features of this engine family include acoustically equal runner lengths and a tumble control valve for the intake manifold, a "silent" timing chain, mirror finished crankshaft and camshaft journals, and offset cylinder placement in an attempt for increased efficiency. The MR is a family of straight-four 16-valve all-aluminium automobile engines with variable valve timing co-developed by Renault and Nissan.
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