发明名称 |
DUAL FUEL CARBURETION SYSTEM AND METHOD. |
摘要 |
A dual fuel system for use with internal combustion engines comprising a manually actuated dual fluid valve which alternatively supplies gasoline to the engine's carburetor or engine intake manifold vacuum to a single-stage liquified gas to gaseous fuel converter having a liquified fuel inlet valve actuated in response to intake manifold vacuum by a diaphragm of substantially the same diameter as a second diaphragm which actuates a valve to a converter gaseous expansion chamber where desired gaseous pressure is maintained and is automatically reduced during cruise conditions by compression of a bellows which acts on the second diaphragm in response to reduced engine intake manifold pressure during such cruise conditions, and a pressurized gaseous fuel and air mixer having a plunger structure responsive to venturi vacuum which meters air flow and actuates a valve needle to meter fuel flow. One alternative preferred embodiment of the mixer employs a relatively large piston which travels a relatively short distance within a cylinder and meters flow of air between the lower surface of the piston and a coaxial annular surface defining a passage into which air flows between such surface and the piston together with fuel, which fuel flows into the fuel and air passage through the piston and through a fuel transfer tube that acts as a piston guide. A second alternative preferred embodiment of the mixer utilizes a smaller diameter piston which travels a relatively long distance and a substantially oval plunger which projects into a substantially rectangular air passage to meter air flow. |
申请公布号 |
EP0073238(A4) |
申请公布日期 |
1983.07.04 |
申请号 |
EP19820901075 |
申请日期 |
1982.02.18 |
申请人 |
PETROSYSTEMS INTERNATIONAL INC. |
发明人 |
HALLBERG, JOHN E. |
分类号 |
F02B43/00;F02M13/08;F02M21/02;F02M21/04;(IPC1-7):F02M21/04;F02M25/00;B01F3/02 |
主分类号 |
F02B43/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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