Air and fuel mixing apparatus and method
This patent describes apparatus for introducing gaseous fuel mixed with air into a tubular intake port of an internal combustion engine, and end portion of the intake port having a selected inside diameter and with the apparatus comprising, in combination, a housing having a rear wall formed with a rear opening sized to receive the tubular intake port end portion, a front wall formed with a front opening aligned with the rear opening, and a gas intake orifice; means for mounting the housing to the intake port; a control tube sized to be inserted into the housing front opening, the bore tapering inwardly towards the end portion and flaring outwardly at the tube end portion; and means for adjustably securing the control tube substantially in place within the housing; whereby upon mounting the housing to the intake port, inserting the control tube into the housing front opening and into a position with its end portion positioned closely adjacent to but spaced from the intake port end portion, and introducing gaseous fuel into the housing through the gas intake orifice, an airstream passing through the control tube and into the intake port may create a drop in pressure as the airstream passes therebetween to draw gaseous fuel from the housing into the airstream through the spacing between the control tube end portion and the intake port, the flow rate of the gaseous fuel being adjustable by repositioning of the control tube within the housing.
- Assignee:
- Davis Family Trust, Atlanta, GA (United States)
- Patent Number(s):
- US 5103795; A
- Application Number:
- PPN: US 7-702053
- OSTI ID:
- 5135733
- Resource Relation:
- Patent File Date: 17 May 1991
- Country of Publication:
- United States
- Language:
- English
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