CN212744163U

CN212744163U - Oil return detection device of common rail system of engine

Info

Publication number: CN212744163U
Application number: CN202021800179.6U
Authority: CN
Inventors: 刘吉; 张鹏; 李笑杰
Original assignee: Shanghai Xingrong Automotive Technology Co ltd
Current assignee: Shanghai Xingrong Automotive Technology Co ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-03-19
Anticipated expiration: 2030-08-25

Abstract

The utility model discloses an engine common rail system return oil detection device, which comprises a main body container, a temperature sensor, a photoelectric liquid level sensor and a controller with timing and display functions, wherein the temperature sensor and the photoelectric liquid level sensor are respectively arranged on the main body container; the controller is used for timing oil pumping of the common rail system, and the temperature sensor is used for measuring the oil return temperature in the main container and outputting the oil return temperature to the controller; controlling the photoelectric liquid level sensor to measure the return oil liquid level in the main container and outputting the return oil liquid level to the controller; the controller judges the measured oil return temperature and oil return liquid level. The device can receive return oil from the engine common rail system in unit time aiming at different engine common rail systems, judge whether the oil temperature is in the normal working range of the common rail system by using the temperature sensor, and judge whether the oil return amount is in the normal range of the selected engine common rail system by using the photoelectric liquid level sensor after the oil temperature is in the measuring range.

Description

Oil return detection device of common rail system of engine

Technical Field

The utility model belongs to vehicle fuel rail system is rail system overhauls equipment, concretely relates to engine rail system returns oil detection device altogether.

Background

The traditional diesel injection system has the pressure generation and the fuel injection quantity which are connected with the cam and the plunger, however, the pressure of the fuel injection is increased along with the increase of the rotating speed and the fuel injection quantity of the engine, and the increasingly strict emission regulations and the requirement of reducing the fuel consumption cannot be met.

The common rail system is produced by storing fuel oil in a high-pressure oil rail at high pressure, and sequentially starting an oil injector to inject the fuel oil into an engine. The defects of the traditional diesel engine injection system are overcome essentially, and the characteristics are as follows: the generation of the oil injection pressure does not depend on the rotating speed of the engine and the oil injection quantity of a system, and the injection pressure and the oil quantity can be flexibly controlled according to different working conditions of the engine, so that the purposes of low rotating speed, high injection pressure, low speed, high torque, low emission and fuel economy optimization are achieved. The ideal fuel injection quantity and fuel injection time are calculated by the electronic control unit, and then the fuel is accurately injected by the fuel injector, even multiple times of injection. With higher system pressure, better emissions, and lower fuel consumption can be achieved.

The common rail system has complex mechanism and more parts, one of the classical faults is that the oil return amount of the common rail system is not in a normal range, and the fault reasons may include aspects of an oil pump, a filter, an overflow valve, a metering unit, an oil rail pressure release valve, an oil injector and the like.

In the maintenance process of the common rail system, maintenance personnel usually need to judge the oil return amount and the oil return temperature of the common rail system within a certain time. There are several problems that exist at present: firstly, time ranges are not uniform, one minute is adopted as a measurement standard in the industry, but in the actual operation process, a master usually adopts estimation or an external clock to carry out rough time judgment, and certain errors exist; secondly, because the return oil of the common rail system has certain temperature and the volume expands, a master is difficult to judge whether the common rail system fails or not according to a uniform temperature standard; the key point is that because common rail systems of multiple brands and models exist in the market, the oil return amount and the oil return temperature in unit time are different, a master needs to look up relevant specifications or online data by oneself, the data is difficult to be comprehensive, and the accuracy is difficult to be ensured.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an engine common rail system oil return detection device is provided, the integration has functions such as liquid level judgement, time control, engine model selection.

In order to solve the technical problem, the utility model discloses a following technical scheme:

an engine common rail system return oil detection device comprises a main body container, a temperature sensor, a photoelectric liquid level sensor and a controller with timing and display functions, wherein the temperature sensor, the photoelectric liquid level sensor and the controller are respectively arranged on the main body container; the controller is used for timing oil pumping of the common rail system, and the temperature sensor is used for measuring the oil return temperature in the main container and outputting the oil return temperature to the controller; controlling the photoelectric liquid level sensor to measure the return oil liquid level in the main container and outputting the return oil liquid level to the controller; the controller judges the measured oil return temperature and oil return liquid level.

The controller comprises a processing module, a timing module, an inquiry module and a display module, wherein the timing module is used for timing oil pumping of the common rail system and controlling the display module to prompt through the processing module; the query module is used for selecting the model of the common rail system of the engine to be tested; the display module is used for displaying corresponding data or alarm prompts.

The controller also comprises a USB interface used for updating data stored in the controller periodically.

Adopt the utility model discloses an engine common rail system oil return detection device has following a plurality of advantages:

1. the controller integrated with the query module is adopted to provide accurate working parameters of different vehicle common rail systems for maintenance personnel;

2. collecting return oil by adopting a main body container, and measuring whether the return oil temperature is normal or not by using a temperature sensor;

3. the photoelectric liquid level sensor is adopted to measure the oil return liquid level, so that whether the oil return amount is in the normal range of the selected engine common rail system can be judged;

4. the timing and measuring module is integrated, the measuring process is standardized, the measuring accuracy is improved, whether the common rail system works normally can be automatically judged, manual intervention is not needed, and human errors are eliminated;

5. the data updating interface of the controller can keep the accuracy and comprehensiveness of the data.

Drawings

The following detailed description of the present invention is made with reference to the accompanying drawings and the embodiments:

fig. 1 is a schematic perspective view of the oil return detection device of the common rail system of the engine of the present invention.

Fig. 2 is a schematic block diagram of the detection device of the present invention.

Detailed Description

The utility model discloses an engine common rail system return oil detection device is shown in figure 1, which mainly comprises a main body container 1, a temperature sensor 2, a photoelectric liquid level sensor 3 and a controller 4 with timing and display functions, wherein the temperature sensor 2, the photoelectric liquid level sensor 3 and the controller are respectively arranged on the main body container 1, the main body container 1 is in a column shape and is communicated with a return oil pipeline of the engine common rail system to be detected, and the inside of the main body container is used for containing return oil; the temperature sensor 2 is arranged at the bottom in the main body container 1, and the photoelectric liquid level sensor 3 is arranged on the side wall of the main body container 1 and is respectively used for detecting the oil return temperature and the oil return liquid level in the main body container 1. The controller 4 is disposed on the front surface of the main body container 1, and as shown in fig. 2, includes a processing module 41, a timing module 42, a display module 43, an inquiry module 44, and the like; the timing module 42 is used for timing oil pumping of the common rail system and controlling the display module 43 to prompt through the processing module 41; the query module 44 is used for selecting the model of the common rail system of the engine to be tested; the display module 43 displays corresponding data or alarm prompts.

The use principle of the detection device is as follows:

firstly, the model of the engine common rail system to be tested and the corresponding data such as the return oil temperature and volume are selected by data stored in the query module 44 on the controller 4 by maintenance personnel, and then the return oil pipeline is connected into the main body container 1;

at this time, pumping oil to the common rail system, timing by the timing module 42 of the controller 4 to a set time, and prompting the maintenance personnel to stop pumping oil, for example, setting a setting button of the controller 4 to count down for one minute, and after one minute, the display module 43 flickers to prompt the maintenance personnel to stop pumping oil;

the temperature sensor 2 is used for measuring whether the oil return temperature is in a normal range, and if the measured oil return temperature is abnormal, the display module 43 of the controller 4 displays that the temperature is too high or too low so as to prompt that the common rail system possibly has problems in working;

and then waiting for cooling the fuel, controlling the photoelectric liquid level sensor 3 to measure the liquid level of the return oil when the controller 4 judges that the temperature reaches the proper temperature capable of measuring the volume according to the return oil temperature measured by the temperature sensor 2, judging whether the return oil quantity is in the normal range of the selected common rail system of the engine or not by the controller 4 according to the measured liquid level, and displaying excessive or insufficient return oil quantity by the controller 4 if the return oil quantity exceeds the range so as to prompt that the common rail system works to have problems.

The controller 4 further includes a USB interface 45, and the data stored in the controller 4 is periodically updated through the USB interface 45, so that the accuracy and comprehensiveness of the data are maintained.

To sum up, the utility model discloses a detection device, it can be through technical means such as liquid level judgement, time control, engine model selection, can be to the common rail system of different engines, receives the oil return that comes from the common rail system of engine in the unit interval, utilizes temperature sensor 2 to judge whether the oil temperature is in the normal operating range of common rail system, and treats that the oil temperature is after the measuring range, utilizes photoelectric liquid level sensor 3 to judge whether the normal range of the common rail system of selected engine is being returned to the oil volume.

However, those skilled in the art should realize that the above embodiments are only used for illustrating the present invention and not used as a limitation of the present invention, and that the changes and modifications to the above embodiments are within the scope of the appended claims as long as they are within the true spirit of the present invention.

Claims

1. The utility model provides an engine common rail system oil return detection device which characterized in that: the device comprises a main container, a temperature sensor, a photoelectric liquid level sensor and a controller with timing and display functions, wherein the temperature sensor, the photoelectric liquid level sensor and the controller are respectively arranged on the main container; the controller is used for timing oil pumping of the common rail system, and the temperature sensor is used for measuring the oil return temperature in the main container and outputting the oil return temperature to the controller; controlling the photoelectric liquid level sensor to measure the return oil liquid level in the main container and outputting the return oil liquid level to the controller; the controller judges the measured oil return temperature and oil return liquid level.

2. The oil return detection device of the common rail system of the engine as claimed in claim 1, wherein: the controller comprises a processing module, a timing module, an inquiry module and a display module, wherein the timing module is used for timing oil pumping of the common rail system and controlling the display module to prompt through the processing module; the query module is used for selecting the model of the common rail system of the engine to be tested; the display module is used for displaying corresponding data or alarm prompts.

3. The oil return detection device of the common rail system of the engine as claimed in claim 1, wherein: the controller also comprises a USB interface used for updating data stored in the controller periodically.