The HR is a family of straight-312-valve and straight-416-valveautomobile engines with continuously variable valve timing, involving development by Nissan (Aichi Kikai) and/or Renault, and also Mercedes-Benz in the case of the H5Ht/M282. The designation of H engine is used by Renault, and M28x by Mercedes-Benz, to classify the family. There are three basic specifications of engine involving variations in engine architecture, or all-new architecture, with 72.2 mm (2.84 in), 75.5 mm (2.97 in) and 78 mm (3.07 in) bore diameter.
78 mm series (2004-)
introduced in 09/2004 on Nissan Tiida C11 in Japan
The HR10DE is a 1.0 L (999 cc) naturally aspiratedstraight-three engine. Bore: 78 mm (3.07 in); Stroke 69.7 mm (2.74 in); 12v DOHC.[1] It produces 56.6 kW (77 PS; 76 hp) and 98 N⋅m (72 lbf⋅ft). Flex-Fuel, gasoline (E22) or ethanol (E100). Compression ratio of 11.2:1.
The HR12DE is a 1.2 L (1,198 cc) naturally aspirated straight-three engine. Bore: 78 mm (3.07 in); Stroke 83.6 mm (3.29 in); 12-valve DOHC; EFI with variable valve timing. It produces 59 kW (80 PS; 79 hp) and 108 N⋅m (80 lbf⋅ft).[2]
The HR14DDe is a 1.4 L (1,433 cc) naturally aspirated straight-3 engine. Bore: 78 mm (3.07 in); Stroke 100 mm (3.94 in); 12v DOHC; direct injection with variable valve timing. It produces 72 kW (97 hp; 98 PS) at 5,600 rpm and 123 N⋅m (91 lbf⋅ft).[4] Purposely, this engine is only built as a power generator for the electric motor.
The HR15DE is a 1.5 L (1,498 cc) naturally aspirated straight-4 engine. Bore: 78 mm (3.07 in); Stroke 78.4 mm (3.09 in); 16 valve DOHC; EFI with variable valve timing. It produces 74 kW (99 hp; 101 PS) at 6000 rpm and 134.4 N⋅m (99 lbf⋅ft) at 4000 rpm and is fitted to the following vehicles:
The HR16DE is a 1.6 L (1,598 cc) naturally aspirated gasoline straight-4 engine, 16 valve DOHC; EFI; with variable valve timing. This engine has two fuel injectors per cylinder to improve fuel economy and reduce emissions. Bore: 78 mm (3.07 in); Stroke 83.6 mm (3.29 in). It produces 77 to 88 kW (103 to 118 hp; 105 to 120 PS) and 158 N⋅m (117 lbf⋅ft) at 4000 rpm.
A new version (still 8 Cycle) has been released to equip Renault hybrids (E-Tech), it produces 67 kW (90 hp; 91 PS) at 5600 rpm and 144 N⋅m (106 lbf⋅ft) at 3200 rpm.
It is fitted to the following vehicles:
neutral idle control achieved through the coordinated control of the engine in tandem with the XTRONIC CVT
introduction of alternator regenerative control mechanism
Reduction of engine friction by machining the cam shaft to a crowning mirror-like finish and application of a fluorine coating to the chain guide
Delayed valve closure timing of the intake, achieved through the increased conversion angle of C-VTC and superior timing management, thus reducing pumping loss when idling
Lower idling speed
The improved HR15DE engines were first used in Nissan Cube, Nissan Cube Cubic, Nissan Note, Nissan Tiida, Nissan Tiida Latio and Nissan Wingroad sold since December 25, 2006.[6][7]
HR12DDR
Nissan HR12DDR
The HR12DDR is a 1.2 L (1,198 cc) supercharged straight-3 engine, equipped with timing chain and direct injection. The engine dimensions are the same as for the HR12DE. It produces 72 kW (98 PS; 97 hp) and 143 N⋅m (105 lb⋅ft). Designed for small-car applications, this gasoline engine incorporates a variety of technologies to minimize CO2 emissions while providing practical levels of power output.[2][8]
Some of the pertinent features are:
Compression ratio of 13.0:1
Continuous Variable Valve Timing Control System (CVTCS)
The HR12DDV is a 1.2 L (1,199 cc) all-aluminium direct injected and variable geometry turbocharged straight-three engine 48V mHEV equipped with lifetime timing chain, 12v DOHC, VVT, variable displacement oil pump, electric driven water pump, with Bore Spray Coating, Stop-Start, and regenerative braking, Bore and stroke are 75.5 and 89.3 mm (2.97 and 3.52 in) respectively. It produces between 130 hp (96 kW) with 205 N⋅m (151 lbf⋅ft) for the E-Tech version; 230 N⋅m (170 lbf⋅ft) for normal version, to 150 hp (110 kW) with 230 N⋅m (170 lbf⋅ft) depending on the application. Renault marketing names for these engines are TCe130, TCe 150 (on the Grand Austral), E-Tech 160 and E-Tech 200.
most of the engines were first seen in Renault or Mercedes-Benz cars
three and four-cylinder layouts with direct fuel injection except HR09DET, HR10DE and HR10DET
designed specifically for turbocharged application, with thicker cylinder walls than the 78 mm bore variants
introduced in 2013 on Renault cars
HR12DDT / HRA2 (Renault H5Ft)
The HR12DDT is a 1.2 L (1,197 cc) all-aluminium direct injected and turbocharged straight-four engine equipped with lifetime timing chain, 16v DOHC, VVT, variable displacement oil pump, Stop-Start and regenerative braking, Bore: 72.2 mm (2.84 in), Stroke 73.1 mm (2.88 in). It produces two choices, 85 kW (114 hp; 116 PS) at 4500 or 5000 or 6000 rpm with 190 N⋅m (140 lbf⋅ft) at 1900–4000 rpm and 97 kW (130 hp; 132 PS) at 5000–5500; rpm with 205 N⋅m (151 lbf⋅ft) at 2000–3000 rpm depending on the application. Renault marketing names for these engines are TCe115, TCe120, TCe125, and TCe130.
This engine has been plagued by abnormal oil consumption.[10]
HR10DE (Renault H4D)
The HR10DE is a 1.0 L (999 cc) multi point injected, naturally aspirated, straight-3 engine. It produces 45 to 52 kW (60 to 70 hp; 61 to 71 PS) at 6000 rpm and 91 N⋅m (67 lbf⋅ft) at 2850 rpm.
The H4Bt is a 0.9 L (898 cc) multi point injected, turbocharged, straight-3 engine. It produces 66 kW (89 hp; 90 PS) at 5500 rpm and 135 to 140 N⋅m (100 to 103 lbf⋅ft) at 2250–2500 rpm. A 110hp version was available in the Twingo GT (2016-2018).
The HR13DDT is a 1.3 L (1,332 cc) all-aluminium direct injected and turbochargedstraight-four engine equipped with lifetime timing chain, 16v DOHC, VVT, variable displacement oil pump, Stop-Start, regenerative braking, and Bore Spray Coating system (as installed in Nissan GT-R models), Bore: 72.2 mm (2.84 in), Stroke 81.3 mm (3.20 in). There are three different versions: 85 kW (114 hp; 116 PS) at 4500 rpm with 220 N⋅m (162 lbf⋅ft) at 1500–3500 rpm, 103 kW (138 hp; 140 PS) at 5000 rpm with 240 N⋅m (177 lbf⋅ft) at 1600–3600 rpm, and 117 kW (157 hp; 159 PS) at 5500 rpm with 270 N⋅m (199 lbf⋅ft) at 1800–3500 rpm depending on the application. Renault brands for these engines are TCe115, TCe140 and TCe160. This engine tests WLTP proof (Euro 6c). This engine is also rebranded as a Mercedes-Benz under the name "M282", adding cylinder deactivation technology. It is fitted to the following vehicles:
The HR10DET is a 1.0 L (999 cc) multi point injected, turbocharged, straight-three engine with a 72.2 mm (2.84 in) bore and a 81.3 mm (3.20 in) stroke.[12] It produces 74 kW (100 PS; 99 hp) at 5000 rpm and 160 N⋅m (118 lbf⋅ft) at 1750 rpm. This engine is also available as a LPG version. Maximum power is unchanged but torque is 170 N⋅m (125 lbf⋅ft) at 2000 rpm.
The HR10DDT is a 1.0 L (999 cc) direct injected, turbocharged, straight-3 engine. It produces 85 or 86 kW (114 or 115 hp; 116 or 117 PS) at 5000 rpm or 5250 rpm and 200 N⋅m (148 lbf⋅ft) at 2750 rpm or 180 to 200 N⋅m (133 to 148 lbf⋅ft) at 1750–4000 rpm.
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