Method to manufacture a common rail

• Main Authors: PIHAVA ERNUR GUSAV, TANSUG ONUR MEHMET
• Format: Patent
• Language: Chinese; English
• Published: 29.09.2017
• Subjects: BLASTING; CHEMISTRY; COMBUSTION ENGINES; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MECHANICAL ENGINEERING; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; WEAPONS

The invention discloses a method to manufacture a common rail. The method for manufacturing a common rail (12) adapted to be arranged in a fuel injection system is disclosed, the common rail (12) having a body (18) provided with a bore (28) defining an internal volume (V), said body (18) extending along a main axis (X) from a first extremity (22) having a first threaded female recess (30) to, a second extremity (26) having a second threaded female recess (44), the bore (28) opening at both ends in one of the recesses (30, 44), the method (100) comprising the steps of a first autofrettage step (130) of said bore (28), an autofrettage fluid (AF) being pressurized to a first pressure (PI) in the bore (28) during this first step (130) and, second autofrettage step (140) for treating the first female threaded recess (30), the autofrettage fluid (AF) being pressurized to a second pressure (P2) in the first recess (30) during this second step (140). 种制造适合于布置在燃料喷射系统中的共轨(12)的方法(100)，该共轨(12)具有设置有孔(28)的本体(18)，该孔限定内部容积(V