Honda HR28TT engine
Reciprocating internal combustion engine
From Wikipedia, the free encyclopedia
The Honda HR28TT engine is a twin-turbocharged, four-stroke, 2.8-liter, V6 racing engine, designed and produced by Honda Performance Development (HPD) for use in multiple Le Mans Prototype race cars, from 2011 to 2014.
| Honda HR28TT engine | |
|---|---|
| Overview | |
| Manufacturer | Honda Performance Development |
| Production | 2011–2014 |
| Layout | |
| Configuration | V6, twin-turbocharged, 60° cylinder angle |
| Displacement | 2.8 L (2,799 cc) |
| Cylinder bore | 89 mm (3.50 in) |
| Piston stroke | 75 mm (2.95 in) |
| Cylinder block material | Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | 24-valve (four-valves per cylinder), SOHC |
| Combustion | |
| Fuel system | Gasoline direct injection |
| Fuel type | IMSA: VP MS100 E10, 100-octane gasoline + 10% ethanol WEC: Elf LM24 E10, 101-octane gasoline + 10% ethanol |
| Oil system | Dry sump |
| Cooling system | mechanically water cooled |
| Output | |
| Power output | 450 hp (336 kW; 456 PS)–500 hp (373 kW; 507 PS) |
| Torque output | 519 N⋅m (383 lb⋅ft)–550 N⋅m (406 lb⋅ft) |
| Dimensions | |
| Dry weight | 170 kg (375 lb) |
| Chronology | |
| Predecessor | HPD LM-V8 |
| Successor | Honda HR35TT |
Overview
The HR28TT was introduced in 2011, following the new cost-capped regulations for the LMP2 class.[1] It is derived from the production J35 family of engines found numerous Honda/Acura production vehicles, using 400 production engine parts, including the engine block and heads, crankshaft, direct-injection fuel system, valve train components, drive-by-wire hardware.[2] The engine also has turbo fresh air valve system, which eliminates turbo lag and provides improved reliability and performance.[3]
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