The Nissan HR10DDT is a 1.0 l (999 cc, 60.7 cu-in)) straight three, four-stroke, liquid-cooled internal combustion gasoline engine from the Nissan HR-family, co-developed by Nissan (Aichi Kikai) and Renault. Renault calls it the H-engine.
The Nissan HR10DDT is a dual direct-injected (Direct Injection Gasoline system or DIG), supercharged and turbocharged engine.
It has a cast aluminum engine block with four main bearings and aluminum DOHC (dual overhead camshaft) cylinder head with 4 valves per cylinder. Bore is 78.0 mm (3.07 in) and stroke is 69.7 mm (2.74 in).
The breakdown of the engine code is as follows:
- HR – Engine Family
- 10 – 1.0 Liter Displacement
- D – DOHC (Dual Overhead Camshafts)
- D – Direct Cylinder Fuel Injection
- T – Turbocharged
General information
| Engine Specifications | |
| Engine code | HR10DDT |
| Layout | Four stroke, Inline-3 (Straight-3) |
| Fuel type | Gasoline |
| Production | – |
| Displacement | 1.0L, 999 cc (60.69 cu-in) |
| Fuel system | Direct Injection Gasoline, DIG |
| Power adder | Supercharger, turbocharger |
| Power output | – |
| Torque output | – |
| Cooling system | Liquid-cooling |
| Firing order | – |
| Dimensions (L x H x W): | – |
| Weight | – |
Cylinder block
| Cylinder block | |
| Cylinder block alloy | Aluminum |
| Compression ratio: | – |
| Cylinder bore: | 78.0 mm (3.07 in) |
| Piston stroke: | 69.7 mm (2.74 in) |
| Bore Pitch (Bore Spacing): | – |
| Block Height: | – |
| Con rod length: | – |
| Crankshaft journal diameter: | – |
| Crankpin diameter: | – |
Cylinder head
| Cylinder head | |
| Cylinder head alloy | Aluminum |
| Valve Arrangement: | DOHC, chain drive |
| Valves: | 12 (4 valves per cylinder) |
| Valve head diameter (INTAKE): | – |
| Valve head diameter (EXHAUST): | – |
Vehicle applications
The Nissan HR10DDT was anticipated for use in the 2010 Nissan Micra but was ultimately dropped in favor of the HR10/12DE and still-simpler HD12DDR/DDT engines, dependent on vehicle and application.
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