Fuel pressure accumulating device
AssigneeMitsubishi Heavy Industries Engine & Turbocharger, Ltd.
InventorsHisao Ogawa, Yosuke Kitamura
Life of this patent
Estimating the term…
Abstract
This fuel pressure accumulating device comprises: a fuel pressure accumulating unit inside which a pressure accumulating space is provided; a fuel inflow unit which is fitted to the fuel pressure accumulating unit and through which fuel can flow into the pressure accumulating space; a fuel outflow unit which is fitted to the fuel pressure accumulating unit and through which the fuel can flow from the pressure accumulating space; and a fuel storage unit which is provided in the fuel pressure accumulating unit, and which stores fuel that has leaked to a position in the fuel pressure accumulating unit where the fuel inflow unit is fitted, and a position in the fuel pressure accumulating unit where the fuel outflow unit is fitted.
Claims12
A fuel pressure accumulating device comprising:
- a fuel pressure accumulator is a cylindrical member with a long opening formed inside;
- a fuel inflow portion that is attached to the fuel pressure accumulator and allows a fuel to flow into the long opening;
- a fuel outflow portion that is attached to the fuel pressure accumulator and allows the fuel to flow out from the long opening;
- and
- a fuel storage portion that is provided in the fuel pressure accumulator, and stores the fuel that has leaked at an attachment position of the fuel inflow portion in the fuel pressure accumulator and an attachment position of the fuel outflow portion in the fuel pressure accumulator,
- wherein
- the fuel pressure accumulator consists of a single piece,
- the fuel storage portion is a flow path formed between an outer peripheral surface of the fuel pressure accumulator and an inner peripheral surface of the fuel pressure accumulator, wherein
- the long opening is provided in a longitudinal direction of the fuel pressure accumulator, and the fuel storage portion includes a first flow path that is parallel to the pressure accumulating space and provided in the longitudinal direction of the fuel pressure accumulator and a second flow path through which the first flow path communicates with the attachment position,
- at both ends of the fuel pressure accumulator, there is a seat surface for attaching a plug,
- both ends in the longitudinal direction of the first flow path and the long opening are formed on the seat surface,
- the longitudinal central axis of the first flow path is offset from the longitudinal central axis of the long opening,
- the entire region of the first flow path is formed on the side close to the longitudinal central axis of the long opening from the attachment position of the fuel inflow portion and the fuel outflow portion in the fuel pressure accumulator.
Dependencies are inferred from the claim text.