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).
Official acceptance test report for a compression ignition unit.
| Identifier | WestWitteringFiles\U\January1930-April1930\ Scan107 | |
| Date | 28th February 1930 | |
| COMPRESSION IGNITION UNIT. OFFICIAL ACCEPTANCE TEST. REQUIREMENTS: HALF-HOUR RUN AT 1500 R.P.M, DEVELOPING A B.M.E.P. OF 50 LBS/SQ". CONDITIONS OF TEST: FUEL: "AIRSHIP DIESEL FUEL OIL" (ANGLO-AMERICAN OIL Co) SP.{Mr Spinney} GR.{George Ratcliffe} = .858 INJECTOR NOZZLE: FOUR HOLES .0125" DIA. CONE ANGLE = 110° INJECTION PRESSURE: 2200 LBS/SQ" INJECTION TIMING: INJECTION COMMENCES AT 21° BEFORE T.D.C. VALVE TIMING: INLET OPENS 5° BEFORE T.D.C. EXHAUST OPENS 47° BEFORE B.D.C. INLET CLOSES 57° AFTER B.D.C. EXHAUST CLOSES 11° AFTER T.D.C. TEST FIGURES: RUNNING TIME | R.P.M. | B.M.E.P. (LBS/SQ") | B.H.P. | BOOST PRESSURE (LBS/SQ") | EXHAUST PRESSURE (LBS/SQ") | TEMP. OF AIR ENTERING CYLINDER. | WATER OUTLET TEMP. | OIL PRESSURE (LBS/SQ") | BAROMETER READING | TEST HOUSE TEMP. START | 1500 | 52.1 | 18.45 | 4.0 | 3.0 | 140°C | 83°C | 61.0 | 760 M/M | 15°C 5 MINS. | 1500 | 54.4 | 19.2 | 4.0 | 2.6 | 154° | 84° | 59.0 | " | 15° 10 " | 1500 | 54.8 | 19.4 | 4.0 | 2.3 | 146° | 83° | 57.0 | " | 15° 15 " | 1500 | 54.8 | 19.4 | 4.0 | 2.5 | 149° | 82° | 57.0 | " | 15° 20 " | 1500 | 55.6 | 19.7 | 4.0 | 2.5 | 157° | 81° | 56.0 | " | 15° 25 " | 1500 | 55.6 | 19.7 | 4.0 | 2.2 | 163° | 80° | 55.5 | " | 15° 30 " | 1500 | 56.1 | 19.8 | 4.0 | 2.3 | 163° | 79° | 55.0 | " | 15° FUEL CONSUMPTION: TOTAL CONSUMPTION FOR RUN = 12.0 LBS. SPECIFIC CONSUMPTION = 1.237 LBS/BHP/HR. (DURING A SUBSEQUENT TEST, A SP.{Mr Spinney} CONS. OF .8 LBS/BHP/HR WAS OBTAINED BY ADVANCING THE TIMING OF THE INJECTION PUMP BY 2° ON THE FLYWHEEL.) | ||