Hitachi Hatsukaze
| Hatsukaze | |
|---|---|
| Hitachi Hatsukaze at the National Air and Space Museum | |
| Type | Four-cylinder air-cooled inverted Inline piston engine |
| National origin | Japan |
| Manufacturer | Hitachi |
| Major applications | Kyushu K9W Kokusai Ki-86 |
| Number built | 1,376 |
| Developed from | Hirth HM 504 |
| Variants | Ishikawajima Tsu-11 |
The Hitachi Hatsukaze (初風, Hatsukaze - fresh wind), also known as the Hitachi GK4 (short Navy), Hitachi Army Type 4 110hp Air Cooled Inline (Army long), Hitachi Ha47 (Army Hatzudoki) and Ha-11 model 11 (unified), was Hitachi's fourth design in a series of aircraft engines built in Japan prior to and during World War II. The original Hatsukaze was a license-built Hirth HM 504. Hatsukaze engines were air-cooled, four-cylinder, inverted inline engines developing around 82 kW (110 hp).