Nissan_MR_engine : definition of Nissan_MR_engine and synonyms of Nissan_MR_engine (English)

15 May 2015 | Author: | Comments Off on Nissan_MR_engine : definition of Nissan_MR_engine and synonyms of Nissan_MR_engine (English)

Nissan MR engine

The MR is a family of straight-4 all-aluminum automobile engines with variable valve timing co-developed by Renault and Nissan. Renault calls it the M engine. 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 for an attempt in increased efficiency.



The MR16DDT is a 1.6#160;L (1618#160;cc) DIG-T (Direct Injection Gasoline Turbo-charged) engine, bore is 79.7#160;mm (3.14#160;in) and stroke is 81.1#160;mm (3.19#160;in). It was first introduced in the Nissan Juke small SUV in the autumn of 2010. Output is 188#160;hp (140#160;kW) and 177#160;lb·ft (240#160;N·m).

Some of the pertinent features of the MR16DDT are:

Sodium filled exhaust valves

Nano finished camshafts

Beehive valve springs

Twin variable valve timing control (CVTCS on intake and exhaust valves)

Turbo-charged and intercooled

Compression ratio of 9.5:1

Improved fuel efficiency and CO2 emissions

Light weight design and reduced frictions



The MR18DE is a 1.8#160;L (1798#160;cc) version, bore is 84.0#160;mm (3.31#160;in) and stroke is 81.1#160;mm (3.19#160;in). It produces 130#160;hp (97#160;kW) .

It complemented the Nissan Wingroad. Nissan Tiida and Tiida Latio’s lineup in mid 2005. This engine is the only one available in the Tiida’s American version, the Nissan Versa Hatchback. Output is 122#160;hp (91#160;kW) at 5500#160;rpm and 174#160;N·m (128#160;lb·ft) at 4800#160;rpm.

Later the North American Nissan Cube also used exactly the same engine from 2009 onwards.

On July 6, 2006 this engine is also fitted to Nissan Livina Geniss for China version and Nissan GRAND LIVINA for Indonesia and Malaysia version. Output is 126#160;hp (94#160;kW) at 5,200 rpm and 174#160;N·m (128#160;lb·ft) at 4,800 rpm.

For Brazil. this engine is fitted to the Tiida and Livina ranges, with Flex-fuel capability.



MR20DE installed (as an M4R) in a Renault Clio III

The MR20DE . a 2.0#160;L (1997#160;cc) engine was the first MR series engine developed by Nissan as a replacement for the QR20DE. It is an undersquare engine, its bore being 84.0#160;mm (3.31#160;in) and stroke 90.1#160;mm (3.55#160;in). It was first introduced in the Lafesta and Serena MPVs and Renault Samsung SM5 in early 2005.

In November 2006, it entered Renault’s lineup in the Clio III as the M4R. where it generates 138#160;PS (101#160;kW; 136#160;hp).

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