From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Graph comparing performance of Direct Injection Spark Ignition against Carburation with varying valve overlaps.
| Identifier | ExFiles\Box 179b\3\ img147 | |
| Date | 7th February 1935 guessed | |
| DIRECT INJECTION SPARK IGNITION CURVES SHOWING THE EFFECT OF VALVE OVERLAP ON B.M.E.P. & CONSUMPTION FOR DIRECT INJECTION COMPARED WITH CARBURATION CONSUMPTION LBS/BHP/HR. B.M.E.P. 204 135 INJECTION 120° OVERLAP INJECTION 0° OVERLAP CARBS. 120° OVERLAP CARBS 0° OVERLAP INJECTION 120° OVERLAP CARBS 120° OVERLAP CARBS 0° OVERLAP | ||