The Russian four-cylinder turbo engine L4 PT-A, developed by NAMI, was presented at the International Automotive Scientific Forum (MANF-2024) in Moscow. This engine has a power of 245 hp and is partially unified with the 4.4-liter engine of the Aurus Senat executive sedan.
The L4 PT-A engine has a working volume of 2.2 liters and is designed with distributed injection. It is designed to use AI-92 gasoline and has a low compression ratio. The weight of this engine is 150 kg, but it is not yet mass-produced.
The technical characteristics of the engine include:
- Configuration: L4;
- Engine type: gasoline, with spark ignition and distributed injection;
- Nominal working volume: 2.2 l;
- Nominal power: 180 kW (245 hp);
- Nominal torque: 380 Nm;
- Average effective pressure: 21.7 bar;
- Rotation frequency at nom. power: 5500 rpm;
- Maximum permissible rotation frequency: 6500 rpm;
- Rotation frequency at nominal torque: 3000-4500 rpm;
- Minimum idle speed: 800-850 rpm;
- Inter-cylinder distance: 101 mm;
- Piston stroke: 90 mm;
- Cylinder diameter: 88 mm;
- Connecting rod length: 155 mm;
- Number of valves per cylinder: 4;
- Compression ratio: 9.5;
- Cylinder firing order: 1-3-4-2;
- Dry weight: 150 kg.
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