| 摘要 |
1521817 Intake manifolds MASCHINENFABRIK AUGSBURGN RNBERG AG 10 June 1976 [10 June 1975] 24094/76 Heading F1B In order to improve cylinder charging by reflected pressure waves and remove the effect of valve overlap between different cylinders, the induction pipes of a V8 naturally-aspirated I.C. engine are connected via inlet porting 1a ... 8a to respective pairs of cylinders having their crank timing 270 degrees or 450 degrees out of phase. The induction pipes 10-13 terminate in a chamber 14 and are of equal length. Corresponding exhaust pipes are collected together into main pipe 19, the diameters and lengths of the exhaust and inlet pipes being such as to produce maximum assistance to the volumetric efficiency at selected engine speeds. The firing order of the embodiment is 1-5-7-2- 6-3-4-8, there being a 90 degree crank angle phase difference between each firing. |
