COMBINATION CONTROL ASSEMBLY

Abstract

A combination control assembly for dual fuel internal combustion engine comprises: a bracket (8) that is fixed on an engine shell (12); a micro switch (9) that is used to send signals; a female quick connector (7) is used to connect with the carburetor and a male quick connector (10) is used to connect with the female quick connector (7); a gas pipe (11) is used to connect with the male quick connector (10) and the other side, gaseous fuel; the bracket (8) is provided with the micro switch (9) and the female quick connector (7), the micro switch (9) is provided with a reed (91), and the male quick connector (10) is provided with a trigger tab (101). When the male quick connector (10) is connected to the female quick connector (7), the trigger tab (101) is against the reed (91). A knob component (6) is connected with the fuel valve (5) to control fuel flow in the fuel pipe (4), and the engine flameout is also controlled by the knob component (6).

Claims

1. A combination control assembly is comprising: a bracket (8) that is fixed on an engine shell (12); a micro switch (9) that is used to send signals; a female quick connector (7) is used to connect with the carburetor and a male quick connector (10) is used to connect with the female quick connector (7); a gas pipe (11) is used to connect with the male quick connector (10) and the gaseous fuel; the bracket (8) is provided with the micro switch (9) and the female quick connector (7); the micro switch (9) is provided with a reed (91), and the male quick connector (10) is provided with a trigger tab (101); when the male quick connector (10) is connected to the female quick connector (7), the trigger tab (101) is against the reed (91).

2. The combination control assembly according to claim 1, characterized in that, also includes a knob component (6), a fuel valve (5) and a fuel pipe (4); the knob component (6) is connected with the fuel valve (5), and the knob component (6) rotates the fuel valve (5) to control the fuel flowing through the fuel pipe (4).

3. The combination control assembly according to claim 2, characterized in that, also includes a control module and solenoid valve; the fuel pipe (4) is connected with the carburetor through the solenoid valve; the micro switch (9) sends a signal to the control module when it is triggered; the module receives the signal and control the solenoid valve to close the fuel flow.

4. The combination control assembly according to claim 2, characterized in that, also includes a the knob component (6) which is provided with a contact cam (65), and when the knob component (6) rotates, the contact cam (65) is contacted with the ON/OFF switch (3) to control the engine shutdown.

5. The combination control assembly according to claim 4, characterized in that, the micro switch (9) is provided with a first pin (92), and a second pin (31) is arranged on the ON/OFF switch (3), the first pin (92) is connected with the second pin (31), and the micro switch (9) is in series with the ON/OFF switch (3).

6. The combination control assembly according to claim 2, characterized in that, also includes a plate body (2); the plate body (2) is provided with a first hole (21); the knob component (6) comprises a rotating part (64) and a rotation shaft (62); the rotation shaft (62) is arranged on the rotating part (64), and is connected with the fuel valve (5) through the first hole (21).

7. The combination control assembly according to claim 6, characterized in that, also includes a choke cable (1); the plate body (2) is provided with a second hole (22); the knob component (6) has a rail (61), which is arranged on the rotating part (64); the choke cable (1) pulls through the second hole (22) and then contacts with the top surface of the rail (61), and the height of the rail (61) is gradually rising, as rotating part (64) drives the rail (61) rotation, so that the rail (61) drives the choke cable (1) to move up and down.

8. The combination control assembly according to claim 6, characterized in that: a limited block (63) is arranged on the rotating part (64), and a limited post (23) is arranged on the plate body (2). When the rotating part (64) is rotated, the limited block (63) is in contact with the limited post (23).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is described in detail below with 8 drawings in which:

[0022] FIG. 1 is a front view of the combination control assembly.

[0023] FIG. 2 is an enlarged view of the area A shown in FIG. 1.

[0024] FIG. 3 is an enlarged view of the area B shown in FIG. 1.

[0025] FIG. 4 is a schematic view of the ON/OFF switch and the knob component.

[0026] FIG. 5 is a schematic view of the first viewing angle of the plate body

[0027] FIG. 6 is a schematic view of the second viewing angle of the plate body

[0028] FIG. 7 is a schematic view of the micro switch.

[0029] FIG. 8 is a schematic view of the engine shell and rotating part.

[0030] Above drawings illustrate of each parts with the digital labels as follows: 1choke cable, 2plate body, 21first hole, 22second hole, 23limited post, 3ON/OFF switch, 31second pin, 4fuel pipe, 5fuel valve, 6knob component, 61rail, 62rotation shaft, 63limited block, 64rotating part, 65contact cam, 7female quick connector, 8bracket, 9micro switch, 91reed, 92first pin, 10male quick connector, 101trigger tab, 11gas pipe, 12engine shell.

EMBODIMENTS OF THE INVENTION

[0031] Reference is made to the accompanying drawings in which its features and advantages will be apparent.

[0032] A combination control assembly is shown in greater detail in FIG. 1-8 comprising: a bracket 8 that is fixed on an engine shell 12; a micro switch 9 that is used to send signals; a female quick connector 7 is used to connect with the carburetor and a male quick connector 10 is used to connect with the female quick connector 7; a gas pipe 11 is used to connect with the male quick connector 10 and the gaseous fuel; the bracket 8 is provided with the micro switch 9 and the female quick connector 7; the micro switch 9 is provided with a reed 91, and the male quick connector 10 is provided with a trigger tab 101. When the male quick connector 10 is connected to the female quick connector 7, the trigger tab 101 is against the reed 91.

[0033] Also includes a knob component 6, a fuel valve 5 and a fuel pipe 4. The knob component 6 is connected with the fuel valve 5, and the knob component 6 rotates the fuel valve 5 to control the fuel flowing through the fuel pipe 4.

[0034] Also includes a control module and solenoid valve, the fuel pipe 4 is connected with the carburetor through the solenoid valve; micro switch 9 sends a signal to the control module when it is triggered; the module receives the signal and control the solenoid valve to close.

[0035] Also includes a the knob component 6 which is provided with a contact cam 65, and when the knob component 6 rotates, the contact cam 65 is contacted with the ON/OFF switch 3 to control the engine shutdown. The micro switch 9 is provided with a first pin 92, and a second pin 31 is arranged on the ON/OFF switch 3, the first pin is 92 connected with the second pin 31, and the micro switch 9 is in series with the ON/OFF switch 3.

[0036] Also includes a plate body 2. The plate body 2 is provided with a first hole 21. The knob component 6 comprises a rotating part 64 and a rotation shaft 62. The rotation shaft 62 is arranged on the rotating part 64, and is connected with the fuel valve 5 through the first hole 21. Also includes a choke cable 1. The plate body 2 is provided with a second hole 22. The knob component 6 has a rail 61, which is arranged on the rotating part 64. The choke cable 1 pulls through the second hole 22 and then contacts with the top surface of the rail 61, and the height of the rail 61 is gradually rising, as rotating part 64 drives rail 61 rotation, so that the rail 61 drives the choke cable 1 to move up and down, and when the choke cable 1 is lifted, the choke is gradually opened.

[0037] The limited block 63 is arranged on the rotating part 64, and the limited post 23 is arranged on the plate body 2. When the rotating part 64 is rotated, the limited block 63 is in contact with the limited post 23. Then the rotating part 64 is restricted by the limited block 63 and the limited post 23.

[0038] The bracket 8, plate body 2 and ON/OFF switch 3 are set on the engine shell 12 with the label GAS, RUN1, RUN OUT Of FUEL, STOP, RUN2 and LPG.

[0039] Operation Process as Follows:

[0040] Start Position Gasoline

[0041] When the rotating part 64 in GAS while fuel valve 5 is partially opened, gas flows through the fuel pipe 4 into the carburetor, choke completely off, ON/OFF switch 3 in off State; rotate the rotating part 64 in the gas to RUN1 angle range, the fuel valve 5 and choke are gradually opened to the maximum position. At any location within this range, the operator can start the engine according to engine status and environmental conditions.

[0042] RUN-1 Gasoline

[0043] When rotate the rotating part 64 from GAS To RUN1 while fuel valve 5 gradually opens to reach the RUN1 position, the fuel valve 5 opening to the maximum, and choke cable 1 sliding along the rail 61, due to the height of the rail 61 is gradually rising, choke opening angle increases. When the knob is turned to the RUN1 position, the choke is completely opened.

[0044] Run Out of Fuel Gasoline

[0045] Continue to rotate the rotating part 64 counterclockwise, the fuel valve 5 of the oil gradually reduces, and the choke keeps fully open. When the user is not ready to use the engine for a long time, rotate to RUN out of the FUEL position, at this time the fuel valve 5 is completely shut down, the choke is still completely open, and the engine continues to run. When the carburetor fuel burns out, the engine flameout, thus avoiding the use of tools to manually drain the residue fuel in carbutor bowl, simplifying the operation.

[0046] Stop

[0047] Continue to rotate the rotating part 64 to the STOP position, then ON/OFF switch 3 is touched by the contact cam 65, the ON/OFF switch 3 is turned on, and engine flameout to stop operation.

[0048] Start Position LPG

[0049] When the rotating part 64 is in the LPG position and the male quick connector 10 is connected to the female quick connector 7, the trigger tab 101 is against the micro switch 9 reed 91, the micro switch 9 sending signal to the control module so to close the solenoid preventing the gasoline from entering the engine combustion chamber when the engine burns the LPG, reducing the instability of the engine due to the simultaneous entry of the two fuels; at this moment the choke is completely shut down. Rotate the rotating part 64 in the LPG to RUN2 angle range, the fuel valve 5 is always in the closed state, LPG flowing through the gas pipe 11, male quick connector 10 and female quick connector 7 into the carburetor, meantime the choke is gradually opened to maximum, and in any position within the range, the operator can start the engine according to the engine state and environmental conditions.

[0050] RUN-2 LPG

[0051] When rotate the rotating part 64 from LPG to RUN2 while fuel valve 5 has been turned off, LPG flows through gas pipe 11, male quick connector 10 and female quick connector 7 into the carburetor, while the opening angle of the choke is gradually increased, and the choke is fully open when the knob is in the RUN2 position.

[0052] Stop

[0053] Continue to rotate the rotating part 64 to stop position, when the ON/OFF switch 3 is touched by the contact cam 64, due to the micro switch 9 and the ON/OFF switch 3 are connected in series, the ON/OFF switch 3 is shielded, so the engine will not flameout. For security reasons, the engine can only be turned off by disconnecting the external LPG fuel, so to avoid the engine being turned off while LPG still inputs, which effectively improves the operation safety of the engine.

[0054] In a word, above description is only one preferred application of our design and all the equivalents derived from it, shall be covered by this claimed invention and shall not utilize unless authorized.