| GB1438664A                (en) |  | Pre-combustion chamber internal combustion engines | 
| GB568295A                (en) |  | Improvements in or relating to cooling systems for internal combustion engines | 
| GB428261A                (en) |  | Improvements relating to cooling systems of internal combustion engines | 
| GB1438771A                (en) |  | Internal combustion engine intake and exhaust assemblies | 
| GB519752A                (en) |  | Improvements in and relating to lubricant-cooling means for liquid-cooled internal combustion engines | 
| GB298624A                (en) |  | Improvements in or relating to two-stroke internal combustion engines | 
| GB566917A                (en) |  | Improvements in or relating to internal combustion engines of the opposed piston type | 
| GB506400A                (en) |  | Improvements in or relating to the combustion chambers of internal combustion engines | 
| GB513668A                (en) |  | Improvements in method of utilizing the energy of combustible charges in internal combustion engines | 
| AU153118B2                (en) |  | A method of cooling the cylinders of internal combustion engines andan engine cooling system and engine embodying such system | 
| GB926365A                (en) |  | Air-cooled internal combustion engine unit | 
| GB478399A                (en) |  | Improvements relating to fuel-air mixture induction systems for two-stroke internal combustion engines | 
| AU212551A                (en) |  | A method of cooling the cylinders of internal combustion engines andan engine cooling system and engine embodying such system | 
| GB548593A                (en) |  | Improvements relating to auxiliary internal combustion engines for aircraft and other vehicles | 
| AU153809B2                (en) |  | Air or liquid cooled cylinder head with lined combustion chamber for fuel injection internal combustion engines | 
| GB861820A                (en) |  | An additional cooling of air-cooled internal-combustion engines | 
| GB499510A                (en) |  | Improvements relating to the cooling of the pistons of internal combustion engines | 
| AU159338B2                (en) |  | Improvements i nor relating to valve port arrangements' for internal combustion engines | 
| GB423717A                (en) |  | Improvements in air-cooling systems for internal combustion engines | 
| CA483445A                (en) |  | Fuel pumps and distributors for petrol-injection internal combustion engines | 
| GB505938A                (en) |  | Improvements in or relating to the air cooling of radial cylinder internal combustion engines | 
| AU117534B2                (en) |  | Improvements in air cooling means for internal combustion engines | 
| GB594109A                (en) |  | Improvements in or relating to the cooling of valve guides of internal combustion engines | 
| AU971952A                (en) |  | Air or liquid cooled cylinder head with lined combustion chamber for fuel injection internal combustion engines | 
| CA482885A                (en) |  | Cooling systems for internal combustion engines |