CN102650539B - Automatic venting device for automobile oil consumption metering instrument - Google Patents

Abstract

The invention provides an automatic venting device for an automobile oil consumption metering instrument. The automatic venting device is characterized by comprising a single-direction release valve 10, an upper limiting piece 12 of a liquid level measuring floater, the liquid level measuring floater 13, a lower limiting piece 14 of the liquid level measuring floater, a liquid level measuring signal wire 15, a power supply wire 16 for a normally-opened solenoid valve, an oil inlet tube 17 for the normally-opened solenoid valve, the normally-opened solenoid valve 18, and an oil outlet tube 19 for the normally-opened solenoid valve. The automatic venting device is used for venting gas in oil return in an oil-return pulse filter of the automobile oil consumption metering instrument in time, so that the stable and accurate work of the automobile oil consumption metering instrument can be ensured. The automatic venting device belongs to the field of transportation means.

Description

An automatic exhaust device for an automobile fuel consumption meter

technical field

The invention relates to an automatic exhaust device for an automobile fuel consumption meter. When the gas content in the oil return pulsation filter reaches a certain value, the gas is automatically discharged, thereby improving the measurement accuracy, measurement stability and performance of the automobile fuel consumption meter. The utility model relates to work reliability, which belongs to the field of transportation tools.

Background technique

Automobile fuel consumption meter is an important tool for automobile fuel-saving effect detection. Chinese utility model patent 201020203444.2 discloses an automobile fuel consumption meter, which is characterized in that it also includes: a flow sensor, a one-way valve, a tee, an oil return pulsation filter, an air release valve, etc., for accurate measurement and real-time display of automobile operation fuel consumption during the process. Because many automobile engines have the phenomenon of oil return and gas, and too much return oil and gas will affect the measurement accuracy of fuel consumption, and even cause the engine to stall. Important issues of measurement accuracy, measurement stability and operational reliability.

Contents of the invention

Aiming at the deficiencies and defects of the prior art, the present invention provides an automatic exhaust device for an automobile fuel consumption meter. When the gas content in the oil return pulsation filter reaches a certain value, the gas is automatically discharged, thereby improving the efficiency of the automobile fuel consumption meter. Measurement accuracy, measurement stability and operational reliability.

The present invention is achieved through the following technical solutions. The invention mainly includes: a fuel tank, a fuel tank outlet pipe, a flow sensor, a one-way valve, a tee, a fuel pump inlet pipe, a fuel pump, a fuel pump return pipe, an oil return pulsation filter, and a fuel consumption data processing CPU, and is characterized in that it also includes : One-way air release valve, liquid level measuring float upper limit plate, liquid level measuring float, liquid level measuring float lower limit plate, liquid level measuring signal line, normally open solenoid valve power line, normally open solenoid valve oil inlet pipe, normally open Solenoid valve, normally open solenoid valve outlet pipe, the connection method is: one end of the oil outlet pipe of the fuel tank is inserted into the fuel tank, the other end of the oil outlet pipe of the fuel tank is connected to the inlet end of the flow sensor, and the non-return end of the one-way valve is connected to the outlet of the flow sensor. The tee is connected with the outflow end of the check valve, the fuel pump inlet pipe and the oil return pulsation filter respectively, the other end of the fuel pump inlet pipe is connected with the fuel pump inlet, and the fuel pump return pipe is respectively connected with the fuel pump The oil outlet and the oil return pulsation filter are connected, the upper part of the oil return pulsation filter is threaded to fix the one-way air release valve, the oil return pulsation filter is installed with a normally open solenoid valve and a liquid level measuring float, and the upper end of the normally open solenoid valve Connect with the oil outlet pipe of the normally open solenoid valve, the lower end of the normally open solenoid valve is connected with the oil inlet pipe of the normally open solenoid valve, the power line of the normally open solenoid valve is connected with the fuel consumption data processing CPU, and the upper part of the liquid level measuring float is fixed with a liquid level measuring float The upper limit piece, the lower part of the liquid level measurement float is fixed with the lower limit piece of the liquid level measurement float, the liquid level measurement signal line of the liquid level measurement float is connected to the fuel consumption data processing CPU, the oil return pulsation filter is a closed container, and the electromagnetic is normally open The valve can also be a normally closed solenoid valve.

The present invention has substantive features and significant progress. The invention provides an automatic exhaust device for an automobile fuel consumption meter. When the gas content in the oil return pulsation filter reaches a certain value, the gas is automatically discharged, thereby improving the measurement accuracy, measurement stability and working reliability of the automobile fuel consumption meter. sex.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Detailed ways

As shown in Figure 1, the present invention mainly comprises: fuel tank 1, fuel tank outlet pipe 2, flow sensor 3, one-way valve 4, tee 5, fuel pump oil inlet pipe 6, fuel pump 7, fuel pump oil return pipe 8, oil return Pulsation filter 9, fuel consumption data processing CPU 11, characterized in that it also includes: one-way air release valve 10, liquid level measurement float upper limit plate 12, liquid level measurement float 13, liquid level measurement float lower limit plate 14, liquid level measurement Signal line 15, normally open solenoid valve power line 16, normally open solenoid valve oil inlet pipe 17, normally open solenoid valve 18, normally open solenoid valve oil outlet pipe 19, the connection method is: one end of the fuel tank oil outlet pipe 2 is inserted into the fuel tank 1, The other end of the oil outlet pipe 2 of the fuel tank is connected to the inlet end of the flow sensor 3, the check end of the check valve 4 is connected to the outlet end of the flow sensor 3, and the tee 5 is respectively connected to the outflow end of the check valve 4 and the oil inlet pipe of the fuel pump. 6. The oil return pulsation filter 9 is connected, the other end of the fuel pump inlet pipe 6 is connected to the fuel inlet of the fuel pump 7, and the fuel pump return pipe 8 is respectively connected to the oil outlet of the fuel pump 7 and the oil return pulsation filter 9 , the upper part of the oil return pulsation filter 9 is threaded to fix the one-way air release valve 10, the inside of the oil return pulsation filter 9 is equipped with a normally open solenoid valve 18 and a liquid level measuring float 13, the upper end of the normally open solenoid valve 18 is connected to the normally open solenoid valve The oil outlet pipe 19 is connected, the lower end of the normally open solenoid valve 18 is connected with the oil inlet pipe 17 of the normally open solenoid valve, the power line 16 of the normally open solenoid valve is connected with the fuel consumption data processing CPU 11, and a liquid level measuring float is fixed on the upper part of the liquid level measuring float 13 The upper limit plate 12, the lower part of the liquid level measuring float 13 is fixed with the liquid level measuring float lower limit plate 14, the liquid level measuring signal line 15 of the liquid level measuring float 13 is connected with the fuel consumption data processing CPU 11, and the oil return pulsation filter 9 is Airtight container, normally open electromagnetic valve 18 also can be normally closed electromagnetic valve.

The working process of an automatic exhaust device of an automobile fuel consumption meter is as follows:

1. When the engine is working, the fuel supplied to the fuel pump 7 comes from two sources: one is through the tee 5, the oil inlet pipe 17 of the normally open solenoid valve, and the normally open solenoid valve 18 (no electricity normally open, fuel flows through) , The oil outlet pipe 19 of the normally open electromagnetic valve is provided by the oil return pulsation filter 9, and the engine oil returns to the oil return pulsation filter 9 through the fuel pump return pipe 8; The flow sensor 3 and the fuel tank outlet pipe 2 are provided by the fuel tank 1, and the fuel that flows from the fuel tank 1 through the flow sensor 3 is the fuel burned by the engine (called fuel-filling measurement).

2. When the gas content in the engine oil return is large, the gas flowing through the oil return pipe 8 of the fuel pump to the inside of the oil return pulsation filter 9 increases continuously, and the upper part of the oil return pulsation filter 9 is continuously filled with gas, and the oil return pulsation filter 9 The fuel liquid level in the interior then keeps dropping, and the liquid level measuring float 13 also descends thereupon. When the liquid level measurement float 13 drops to the lower limit plate 14 of the liquid level measurement float, the liquid level measurement signal line 15 sends a lower limit signal to the fuel consumption data processing CPU 11, and the fuel consumption data processing CPU 11 is connected to the power supply of the normally open solenoid valve 18, and the normally open solenoid valve 18 In the closed state, the fuel return pulsation filter 9 supplies fuel to the fuel pump 7, and the fuel supply to the fuel pump 7 is only provided by the fuel tank 1, resulting in the fuel flowing through the fuel pump return pipe 8 to the fuel return pulsation filter 9. Accumulate quickly, the fuel liquid level inside the oil return pulsation filter 9 rises rapidly, the internal gas is compressed during the rise of the liquid level, and the one-way air release valve 10 is pushed to the outside to exhaust (automatic exhaust). When the fuel liquid level inside the oil return pulsation filter 9 rises to the upper limit plate 12 of the liquid level measurement float, the liquid level measurement signal line 15 sends an upper limit signal to the fuel consumption data processing CPU 11, and the fuel consumption data processing CPU 11 closes the power supply of the normally open solenoid valve 18 , the normally open solenoid valve 18 is in the connected state, the oil return pulsation filter 9 starts to supply fuel to the fuel pump 7, the air pressure inside the oil return pulsation filter 9 decreases accordingly, the one-way exhaust valve 10 is automatically closed, and the exhaust Finish.

Claims (2)

1. An automatic exhaust device for an automobile fuel consumption meter, mainly comprising: a fuel tank (1), a fuel tank outlet pipe (2), a flow sensor (3), a one-way valve (4), a tee (5), a fuel pump inlet Oil pipe (6), fuel pump (7), fuel pump return pipe (8), oil return pulsation filter (9), fuel consumption data processing CPU (11), characterized in that it also includes: one-way air release valve (10) , Liquid level measurement float upper limit plate (12), liquid level measurement float (13), liquid level measurement float lower limit plate (14), liquid level measurement signal line (15), normally open solenoid valve power line (16), Normally open solenoid valve oil inlet pipe (17), normally open solenoid valve (18), normally open solenoid valve oil outlet pipe (19), the connection method is: one end of the fuel tank outlet pipe (2) is inserted into the fuel tank (1), and the fuel tank outlet The other end of the oil pipe (2) is connected to the inlet end of the flow sensor (3), the check end of the one-way valve (4) is connected to the outlet end of the flow sensor (3), and the tee (5) is connected to the one-way valve ( 4), the fuel pump inlet pipe (6) and oil return pulsation filter (9) are connected, the other end of the fuel pump inlet pipe (6) is connected with the fuel pump (7) inlet, and the fuel pump return pipe (8) Connect with the oil outlet of the fuel pump (7) and the oil return pulsation filter (9), the upper part of the oil return pulsation filter (9) fixes the one-way air release valve (10), and the oil return pulsation filter (9) A normally open solenoid valve (18) and a liquid level measuring float (13) are installed inside, the upper end of the normally open solenoid valve (18) is connected with the normally open solenoid valve oil outlet pipe (19), and the normally open solenoid valve (18) The lower end of the valve is connected to the oil inlet pipe (17) of the normally open solenoid valve, the power line (16) of the normally open solenoid valve is connected to the fuel consumption data processing CPU (11), and the upper part of the liquid level measuring float (13) is fixed with the upper limit of the liquid level measuring float The level piece (12), the lower part of the liquid level measurement float (13) is fixed with the liquid level measurement float lower limit piece (14), the liquid level measurement signal line (15) of the liquid level measurement float (13) and the fuel consumption data processing CPU ( 11) connected, the oil return pulsation filter (9) is an airtight container. 2. The automatic exhaust device for an automobile fuel consumption meter according to claim 1, characterized in that: the normally open solenoid valve (18) can also be a normally closed solenoid valve.

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