| 摘要 |
The invention relates to a pump device used to supply fuel to a fuel injection system in an internal combustion engine. The pump device has a drive shaft (10) which has two parts (12, 20). The first part (12) of the drive shaft (10) is housed in a housing (25) of the high pressure pump 13 and moves at least one piston (33) of the high pressure pump (13). The second part (20) of the drive shaft (10) is housed in a housing (38) of the low pressure pump (23) and is connected to the low pressure pump (23) which is a gear pump. The two parts (12, 20) of the drive shaft (10) are manufactured separately and later joined permanently. The second part (20) of the drive shaft (10) is designed for a specific low pressure pump 23 whereas the first part (12) of the drive shaft (10) is independent of the low pressure pump (23).
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