The 1NR-FE is a compact inline four piston engine featuring Stop & Start technology and Dual VVT-i. It was introduced into European market in late 2008 with the Yaris XP9F. Improved engine performance combined with low emissions and fuel consumption was the principal aim during its development.
Advanced engineering has been applied throughout the 1NR-FE engine. Toyota engineers streamlined the engine’s intake channel, used computer simulation to optimise airflow, smoothened all surfaces for less turbulence and rounded off all angles and sharp edges inside the engine. One of the key elements of the 1NR-FE engine is its piston design. Smaller and lighter than on the previous 1.3 L (1,297 cc) unit, they are designed with a smaller contact area and use carbon ceramide, an advanced material commonly used in Formula One engineering, to reduce friction. The engine also features cooled exhaust gas recirculation (cold area specification models only) to reduce pumping losses and reduce NO x emissions.
Technical specifications of the engine:
- Displacement: 1.3 L; 81.1 cu in (1,329 cc)
- Bore x Stroke: 72.5 mm × 80.5 mm (2.85 in × 3.17 in)
- Max. Output: Euro 4 Version: 74 kW (99 bhp; 101 PS) at 6000 rpm, Euro 5 Version: 73 kW (98 bhp; 99 PS) at 6000 rpm, Indonesia Euro 3 Version: 72 kW (97 bhp; 98 PS) at 6000 rpm, Malaysia version: 71 kW (95 bhp; 97 PS) at 6000 rpm
- Max. Torque: Euro 4 Version: 132 N⋅m (97 lb⋅ft) at 3800 rpm, Euro 5 Version: 128 N⋅m (94 lb⋅ft) at 3800 rpm, Indonesia Euro 3 Version: 120 N⋅m (89 lb⋅ft), Malaysia Version: 121 N⋅m (89 lb⋅ft) at 4000 rpm
- Compression Ratio: 11.5:1; Indonesia Euro 3 Version: 10.5:1
- Valve Mechanism: 16-valve DOHC, Chain Drive (with Dual VVT-i)
- Fuel Injection System: Electronic fuel injection
- Ignition System: Direct Ignition system
- Emission Regulation: Euro 4 (Complies with Euro 5 after optimizations introduced in July 2010)
- Engine Service Mass (incl. coolant & oil): 89.5 kg (197 lb)
- 6200 rpm redline