Fuel supply apparatus with fuel atomizer
This patent describes a fuel supply apparatus for an internal combustion engine having a body through which a suction passage extends, an injector having a fuel discharge port disposed in the body, a lateral bore formed in a side wall portion of the body, a throttle valve disposed in the suction passage, and a fuel atomizer disposed adjacent to the fuel discharge port for atomizing fuel supplied therefrom. The atomizer includes a cylindrical vibrator the axis of which extends towards the suction passage. The vibrator has an opening which faces the fuel discharge port, and a vibrator-increasing block extending through the lateral bore and having the cylindrical vibrator affixed to an end thereof, the cross-sectional area of the vibrator as projected onto the lateral bore being greater than the cross-sectional area of the vibration-increasing block as projected onto the lateral bore, and a space being provided between the surface of the lateral bore and the surface of the vibration-increasing block extending therethrough. The improvement comprises a filler member for filling a space disposed in the space between the lateral bore and the vibration-increasing block, an outer peripheral surface of the filler member formed in close contact with a peripheral surface of the lateral bore, and a narrow clearance formed between an inner peripheral surface of the filler member and an outer peripheral surface of the vibration-increasing block so as to substantially reduce the volume of the space while still permitting the vibration-increasing block to be vibrated therein.
- Assignee:
- Hitachi, Ltd., Tokyo
- Patent Number(s):
- US 4703743
- OSTI ID:
- 5685265
- Resource Relation:
- Patent File Date: Filed date 7 Jan 1986
- Country of Publication:
- United States
- Language:
- English
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