Vapor injector for engines

Claim 2

A charge forming device including a closed reservoir, said reservoir including air intake passage means having an inlet end opening outwardly to the ambient atmosphere and a discharge end opening into the interior of said reservoir below the intended liquid level therein, said reservoir including an air and vaporized fuel outlet opening into said reservoir above said intended liquid level, a vacuum line having an inlet end connected to said outlet and an outlet end adapted to open into the intake passages of a naturally aspirated engine subject to manifold vacuum, said outlet including vacuum controlled valve means operable to variably restrict the flow of air and vaporized fuel therepast in response to increases in vacuum in said outlet at said valve, said reservoir including a lower internal horizontal baffle plate downwardly through the center of which the discharge end of said air intake passage means opens, said baffle plate including a plurality of apertures formed therethrough through which intake air may bubble upward, said air intake passage means including an upstanding tube whose lower end is secured to and opens downwardly through the center of said baffle plate, and a plurality of upstanding partitions spaced circumferentially about said tube within said reservoir and radiating generally radially outwardly of said tube and dividing the interior of said reservoir above said baffle plate into a plurality of separate upstanding compartments, said reservoir including an inner top wall removably closing the open upper ends of said compartments and through which said outlet opens into one of said compartments said top wall including an air inlet opening formed therethrough with which the upper end of said tube is registered, the upper marginal edge portions of said partitions including voids establishing communication between the upper portions of said compartments.

Claim 3

The combination of claim 1 wherein said top wall includes variable air flow restricting means operatively associated with said inlet opening operative to adjustably meter the flow of inlet air therethrough.

Claim 4

The combination of claim 2 wherein said top wall includes an inlet neck through which liquid may be poured into said reservoir, said inlet neck including a removable closure.

Claim 5

A charge forming device including a closed reservoir, said reservoir including air intake passage means having an inlet end opening outwardly to the ambient atmosphere and a discharge end opening into the interior of said reservoir below the intended liquid level therein, said reservoir including an air and vaporized fuel outlet opening into Said reservoir above said intended liquid level, a vacuum line having an inlet end connected to said outlet and an outlet end adapted to open into the intake passages of a naturally aspirated engine subject to manifold vacuum, said outlet including vacuum controlled valve means operable to variably restrict the flow of air and vaporized fuel therepast in responst to increases in vacuum in said outlet at said valve, said reservoir includng a lower internal horizontal baffle plate downwardly through the center of which the discharge end of said air intake passage means opens, said baffle plate including a plurality of apertures formed therethrough through which intake air may bubble upward, said air intake passage means including an upstanding tube whose lower end is secured to and opens downwardly through the center of said baffle plate, and a plurality of upstanding partitions spaced circumferentially about said tube within said reservoir and radiating generally radially outwardly of said tube, said reservoir including an inner top wall removably closing the open upper end of said reservoir and through which said outlet opens, said top wall including an air inlet opening form therethrough with which the upper end of said tube is registered, and an outer top all disposed over and including peripheral portions abutted against corresponding peripheral portions of the first mentioned top wall, said outer top wall having air inlet openings formed therethrough, and a panel of air filtering material including peripheral portions secured between the opposing peripheral edge portions of said top walls and through which ambient air gaining access to said air inlet openings must pass.

Claim 6

A charge forming device including a closed reservoir, said reservoir including air intake passage means having an inlet end opening outwardly to the ambient atmosphere and a discharge end opening into the interior of said reservoir below the intended liquid level therein, said reservoir including an air and vaporized fuel outlet opening into Said reservoir above said intended liquid level, a vacuum line having an inlet end connected to said outlet and an outlet end adapted to open into the intake passages of a naturally aspirated engine subject to manifold vacuum, said outlet including vacuum controlled valve means operable to variably restrict the flow of air and vaporized fuel therepast in responst to increases in vacuum in said outlet at said valve, said reservoir includng a lower internal horizontal baffle plate downwardly through the center of which the discharge end of said air intake passage means opens, said baffle plate including a plurality of apertures formed therethrough through which intake air may bubble upward, said air intake passage means including an upstanding tube whose lower end is secured to and opens downwardly through the center of said baffle plate, and a plurality of upstanding partitions spaced circumferentially about said tube within said reservoir and radiating generally radially outwardly of said tube, said reservoir including an inner top wall removably closing the open upper end of said reservoir and through which said outlet opens, said top wall including an air inlet opening form therethrough with which the upper end of said tube is registered, and an outer top all disposed over and including peripheral portions abutted against corresponding peripheral portions of the first mentioned top wall, said outer top wall having air inlet openings formed therethrough, and a panel of air filtering material including peripheral portions secured between the opposing peripheral edge portions of said top walls and through which ambient air gaining access to said air inlet openings must pass.

Claim 7

In combination with a naturaly aspirated combustion engine including itake passages subject to engine vacuum, liquid vaporizing means including a liquid reservoir having a quantity of liquid disposed therein, said vaporizer means including means defining gas passage means provided with inlet and outlet ends, said inlet end being adapted for communication with a source of gas, said vaporizer means further including means operative to cause vapors of said liquid to become suspended in a flow of gas passing through said passage means from the inlet end thereof to the outlet end thereof in amounts increasing generally proportional to increases in the volume of gas flowing through said passage means, said outlet end being communicated with said intake passages, and engine vacuum responsive valve means operatively associated with said passage means for terminating the gas flow through said passage means in response to engine vacuum dropping below a predetermined minimum, allowing full flow of gas flow through said passage in response to engine vacuum increasing from below said predetermined minimum to the predetermined minimum, and gradually restricting the flow of gas through said passage to a predetermined minimum flow in response to engine vacuum increasing from said predetermined minimum vacuum to a predetermined maximum vacuum.

Claim 8

In combination with a naturaly aspirated combustion engine including itake passages subject to engine vacuum, liquid vaporizing means including a liquid reservoir having a quantity of liquid disposed therein, said vaporizer means including means defining gas passage means provided with inlet and outlet ends, said inlet end being adapted for communication with a source of gas, said vaporizer means further including means operative to cause vapors of said liquid to become suspended in a flow of gas passing through said passage means from the inlet end thereof to the outlet end thereof in amounts increasing generally proportional to increases in the volume of gas flowing through said passage means, said outlet end being communicated with said intake passages, and engine vacuum responsive valve means operatively associated with said passage means for terminating the gas flow through said passage means in response to engine vacuum dropping below a predetermined minimum, allowing full flow of gas flow through said passage in response to engine vacuum increasing from below said predetermined minimum to the predetermined minimum, and gradually restricting the flow of gas through said passage to a predetermined minimum flow in response to engine vacuum increasing from said predetermined minimum vacuum to a predetermined maximum vacuum.