Family of French ultralight aircraft engines
| JPX D-320
|
| Type
|
Two-cylinder two-stroke engine
|
| National origin
|
France
|
| Manufacturer
|
JPX
|
| Produced
|
until 2012
|
The JPX D-320 and D330 are a family of French twin-cylinder, horizontally opposed, two-stroke aircraft engines.[1][2]
The engine was introduced specifically for the powered paraglider market, as part of the company's comeback efforts following going out of business in the early 1990s.[1] Production of the engine had ended by 2012.[3]
Design and development
The engine has two cylinders in a horizontally opposed configuration, with cooling fins on the cylinders. The single ignition system uses capacitor discharge ignition. Fuel is metered by a single Tillotson carburetor. Starting is only by electric start, without recoil start as an option.[1][2]
The D-320 has a redline rpm of 6600 and uses a belt reduction drive of 2.38:1. Its weight of just 36 lb (16 kg) gives the engine a high power-to-weight ratio.[1][2]
Variants
- D-320
- Twin-cylinder, horizontally opposed aircraft engine introduced in the mid-1990s and currently out of production. Power output is 20 hp (15 kW) at 6600 rpm.[1][2]
- D330
- Twin-cylinder, horizontally opposed aircraft engine, improved variant, currently in production. Power output is 20 hp (15 kW) at 6500 rpm.[2]
Applications
Specifications (D330)
Data from JPX[2]
General characteristics
- Type: twin-cylinder, two-stroke engine
- Displacement: 319 cc (19.47 cu inches)
- Dry weight: 15.5 kg (34 lb) complete with standard reduction drive, carburettor, air filter, electronic ignition, starter motor and exhaust system.
Components
- Valvetrain: 6-blade reed valve induction
- Fuel system: Tillotson carburetor
- Oil system: premixed 2.5% oil and fuel
- Cooling system: air cooled
- Power output: 20 hp (15 kW) at 6500 rpm
- Compression ratio: 8.5:1
- Fuel consumption: 2.5 litres to 6 litres per hour depending on load and cruising speed
See also
References
