CN103225529B - A kind of intelligent oil pan assembly of use for diesel engine and using method thereof - Google Patents

Abstract

An intelligent oil pan assembly for a diesel engine, including an oil pan shell, a processor and a display device, the oil pan shell is provided with an oil quality sensor, a temperature sensor, and a liquid level sensor, and the processing The device is the engine control unit EECU, the oil quality sensor, temperature sensor, and liquid level sensor are connected to the input end of the processor, and the output end of the processor is connected to the display device; In the program, the processor is instructed to monitor the engine oil level once, and then the processor controls the vehicle according to the estimated remaining mileage of the engine that can run well during the running process after the vehicle is started. This design can not only provide accurate oil level information, real-time estimate of the remaining good operating mileage of the engine, but also accurately judge the overall quality of the engine oil; in addition, this design can match the vehicle control strategy for intelligent multi-functional calibration design.

Description

An intelligent oil pan assembly for a diesel engine and its application method

technical field

The invention relates to the field of automobile manufacturing, in particular to an intelligent oil pan assembly for a diesel engine and a method for using the same, which is particularly suitable for providing accurate information on the liquid level of engine oil and estimating the remaining mileage of the engine in real time.

Background technique

In recent years, diesel engines have been widely used due to their high power, long life, good dynamic performance, good thermal efficiency and economical efficiency. Diesel engines usually use a wet oil pan installed at the bottom of the engine block. In order to ensure the normal operation of the engine cooling and lubrication system, the liquid level of the oil in the oil pan needs to be kept within a certain range. Therefore, it is necessary to set the static condition during design. The upper and lower limits of the height of the oil level in the lower oil pan.

After the car is used for a period of time, a large amount of sludge will be deposited in the engine lubrication system, which will affect the normal operation of the lubrication system and even cause serious mechanical failures. Therefore, the lubrication system needs regular maintenance. Usually, whether the lubrication system needs maintenance is determined by the mileage of the vehicle.

The Chinese patent authorization announcement number is CN202031681U, and the utility model patent whose authorization announcement date is November 9, 2011 discloses a detection device for detecting the liquid level in the engine oil pan. The detection device includes a liquid level sensor, a processor and A display device, the liquid level sensor is installed on the oil pan, the processor is connected with the liquid level sensor to detect the liquid level in the oil pan and output a liquid level signal, the display device is connected with the processor to display the liquid level bit value. Although the liquid level sensor in this utility model is directly in contact with the liquid to be measured, which improves the accuracy of detection, the following defects still exist:

In the wet oil sump, every time the crankshaft of the engine rotates once, the crankshaft and the big end of the connecting rod will be immersed in the engine oil of the oil pan once for lubrication; due to the high-speed operation of the crankshaft, the crankshaft will be immersed in the oil pool at high speed every time Both will arouse a certain amount of oil spray and oil mist, and when the crankshaft rotates at different speeds, the height of the oil spray and oil mist aroused by the crankshaft is also different, so it is not possible to accurately monitor the engine oil only based on the data provided by the liquid level sensor surface height.

Contents of the invention

The object of the present invention is to overcome the problem of inability to accurately monitor the level of engine oil in the prior art, and provide an intelligent oil pan assembly for diesel engines capable of accurately monitoring the level of engine oil and its application method.

For realizing above object, technical scheme of the present invention is as follows:

An intelligent oil pan assembly for a diesel engine, including an oil pan shell, a processor and a display device, the oil pan shell is provided with a liquid level sensor, the liquid level sensor and the processor The input end is connected, and the output end of the processor is connected with the display device; the oil pan housing is also provided with an oil quality sensor and a temperature sensor, and the oil quality sensor and the temperature sensor are both connected with the output end of the processor. .

The oil quality sensor, temperature sensor, and liquid level sensor are all arranged on the side of the deep end of the oil pan shell, and the oil quality sensor, temperature sensor, liquid level sensor and the bottom of the oil pan shell distances are equal.

The ratio of the distance between the oil quality sensor and the bottom to the minimum liquid level of the engine oil and the distance between the bottom is 1:2˜1:4.

The ratio between the distance between the oil quality sensor and the bottom and the minimum liquid level of the engine oil and the distance between the bottom is 1:3.

The liquid level sensor is a pressure type liquid level sensor.

The processor is an engine control unit EECU.

The bottom is provided with an oil drain screw plug.

A method for using the intelligent oil pan assembly for the diesel engine, the method includes the following steps in sequence:

a. Install the oil quality sensor, temperature sensor and liquid level sensor within the required height range, wherein the oil quality sensor, temperature sensor and liquid level sensor are connected to the input end of the processor, and the output end of the processor is connected to the display device connected;

b. Before the vehicle is ignited and started, a self-inspection program is first run, and the self-inspection program instructs the processor to monitor the engine oil level once, and if the liquid level is abnormal, an alarm is issued; if the liquid level is normal, the vehicle is ignited to start the vehicle;

c. During the running process after the vehicle is started, the real-time data monitored by the oil quality sensor, temperature sensor, liquid level sensor and the engine are transmitted to the processor, and then the processor estimates according to the received real-time monitoring data. The remaining good running mileage of the engine, and then control the vehicle according to the estimated remaining good running mileage of the engine.

In step b, if the liquid level is abnormal, then sending an alarm means: when it is detected that the liquid level of the engine oil is equal to or less than the minimum liquid level of the engine oil, the processor will issue a warning message on the liquid level and display it on the display on the device.

In step c, controlling the vehicle according to the estimated remaining good mileage of the engine means:

When it is estimated that the remaining good mileage of the engine is 100km, the processor correspondingly sends out the first mileage warning message and displays it on the display device;

When it is estimated that the remaining good mileage of the engine is 50km, the processor will issue a second mileage warning message and display it on the display device;

When it is estimated that the remaining good mileage of the engine is 5km, the processor will issue a third mileage warning message and display it on the display device;

When it is estimated that the remaining good running mileage of the engine is 0km, the processor controls the engine to take measures of limiting torque and speed.

Compared with prior art, the beneficial effect of the present invention is:

1. An intelligent oil pan assembly for a diesel engine of the present invention and its use method are provided with an oil quality sensor, a temperature sensor and a liquid level sensor on the oil pan shell, and the processor adopts an engine control unit EECU. Based on the monitoring data of the liquid level sensor, oil quality sensor and temperature sensor, combined with the engine operating state parameters, the device can calculate the accurate oil level value. Therefore, the present invention can accurately monitor the height of the oil level.

2. An intelligent oil pan assembly for a diesel engine of the present invention and its usage method are controlled by relevant calculation and calibration of the processor according to the monitoring data of the oil quality sensor and the temperature sensor and various parameters given by the sensor on the engine. According to the strategy, maintenance prompt information such as estimated engine remaining good operating mileage can be obtained, and provided to the vehicle user through the display device. Therefore, the present invention can estimate the maintenance prompt information such as the remaining good running mileage of the engine in real time, and intelligently prompt the user to perform the maintenance of the engine lubrication system immediately.

3. An intelligent oil pan assembly for a diesel engine and its usage method according to the present invention. The oil quality sensor, temperature sensor and liquid level sensor are arranged at the same height, which is beneficial to the control of the calibration strategy. Therefore, the present invention facilitates the control of the calibration strategy.

4. An intelligent oil pan assembly for a diesel engine and its usage method according to the present invention. The oil quality sensor is arranged on the side of the deep end of the oil pan body, and its installation position is controlled within a certain height range. This design is beneficial to Accurately judge the overall quality of the engine oil, so as to provide users with a more reasonable reminder of the oil replacement cycle. Therefore, the present invention can accurately judge the overall quality of engine oil.

5. An intelligent oil pan assembly for a diesel engine and its use method of the present invention use the related calculation and calibration control strategy of the engine control unit EECU, and the liquid level sensor uses a pressure type liquid level sensor, which not only simplifies the calibration strategy , and the strategy can be matched with the vehicle control strategy to carry out intelligent multi-functional calibration design. Therefore, the present invention not only simplifies the calibration strategy, but also can match the whole vehicle control strategy to carry out intelligent multifunctional calibration design.

6. An intelligent oil pan assembly for a diesel engine according to the present invention and its use method sequentially include the steps of instrument installation, the step of monitoring the level of oil level before the ignition of the vehicle, and the step of controlling the processor during the start-up of the vehicle. In the liquid level monitoring step, the processor intelligently prompts the vehicle user to replenish the engine oil in a timely manner according to the calculated oil level value, so as to ensure that the oil level is within the normal range when the vehicle is running, effectively avoiding engine parts wear due to lack of lubrication; in the processor control step, the processor estimates the oil quality sensor, temperature sensor, liquid level sensor, and real-time data monitored by the engine through its own calculation and calibration strategy The remaining good running mileage of the engine, and control the vehicle based on the estimated remaining good running mileage of the engine, to remind the user to maintain the engine lubrication system, to ensure the normal running performance of the engine and prevent engine damage. Therefore, the invention can effectively reduce the wear of engine parts, ensure the normal running performance of the engine, and prevent the damage of the engine.

Description of drawings

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

In the figure: oil pan shell 1, deep end 11, bottom 12, oil quality sensor 2, temperature sensor 3, liquid level sensor 4, processor 5, display device 6, minimum oil level 7, oil drain plug 8.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1, an intelligent oil pan assembly for a diesel engine includes an oil pan shell 1, a processor 5 and a display device 6, the oil pan shell 1 is provided with a liquid level sensor 4, the The liquid level sensor 4 is connected to the input end of the processor 5, and the output end of the processor 5 is connected to the display device 6; the oil pan housing 1 is also provided with an oil quality sensor 2 and a temperature sensor 3, Both the oil quality sensor 2 and the temperature sensor 3 are connected to the output end of the processor 5 .

The oil quality sensor 2, temperature sensor 3, and liquid level sensor 4 are all arranged on the side of the deep end 11 of the oil pan shell 1, and the oil quality sensor 2, temperature sensor 3, liquid level sensor 4 and The distances between the bottoms 12 of the oil sump housing 1 are all equal.

The ratio of the distance between the oil quality sensor 2 and the bottom 12 to the distance between the lowest oil level 7 and the bottom 12 is 1:2˜1:4.

The ratio of the distance between the oil quality sensor 2 and the bottom 12 to the distance between the lowest oil level 7 and the bottom 12 is 1:3.

The liquid level sensor 4 is a pressure type liquid level sensor.

The processor 5 is an engine control unit EECU.

The bottom 12 is equipped with an oil drain screw plug 8 .

A method for using the intelligent oil pan assembly for the diesel engine, the method includes the following steps in sequence:

a. Install said oil quality sensor 2, temperature sensor 3 and liquid level sensor 4 within the required height range, wherein, oil quality sensor 2, temperature sensor 3, liquid level sensor 4 are connected with the input end of processor 5, process The output terminal of device 5 is connected with display device 6;

b. Before the vehicle is ignited and started, the self-inspection program is first run, and the self-inspection program commands the processor 5 to monitor the engine oil level once, and if the liquid level is abnormal, an alarm is issued; if the liquid level is normal, the vehicle is ignited to start the vehicle ;

c. In the running process after the vehicle is started, the real-time data monitored by the oil quality sensor 2, the temperature sensor 3, the liquid level sensor 4, and the engine are transmitted to the processor 5, and then the processor 5 according to the received data The real-time monitoring data estimates the remaining good operating mileage of the engine, and then controls the vehicle according to the estimated remaining good operating mileage of the engine.

In step b, if the liquid level is abnormal, then sending an alarm means: when it is detected that the liquid level of the engine oil is equal to or less than the minimum liquid level 7 of the engine oil, the processor 5 will issue a warning message for the liquid level and display on the display device 6.

In step c, controlling the vehicle according to the estimated remaining good mileage of the engine means:

When it is estimated that the remaining good running mileage of the engine is 100km, the processor 5 correspondingly sends out the first mileage warning message and displays it on the display device 6;

When it is estimated that the remaining good running mileage of the engine is 50km, the processor 5 correspondingly sends out a second mileage warning message and displays it on the display device 6;

When it is estimated that the remaining good running mileage of the engine is 5km, the processor 5 correspondingly sends out a third mileage warning message, which is displayed on the display device 6;

When it is estimated that the remaining good running mileage of the engine is 0 km, the processor 5 controls the engine to take measures of limiting torque and speed.

Principle of the present invention is described as follows:

Sensors and processors: First, the present invention is provided with an oil quality sensor 2, a temperature sensor 3 and a liquid level sensor 4 on the oil pan housing 1, and is connected with the oil quality sensor 2, the temperature sensor 3 and the liquid level sensor 4 The connected processor 5 is an engine control unit EECU, and the processor 5 is based on the oil level value provided by the liquid level sensor 4 and the real-time state parameters of the engine oil provided by the oil quality sensor 2 (the electrolyte constant that determines the conductivity of the electrolyte of the engine oil solution). etc.) and the monitoring data of the temperature sensor 3, combined with the rotational speed measured by the sensor on the engine and the engine oil flow rate measured by the sensor on the bench calibration system on the engine and other engine operating state parameters, accurate engine oil fluid can be obtained through calibration correction secondly, the processor 5 is based on the monitoring data of the oil quality sensor 2, the temperature sensor 3 and the oil passage pressure sensor on the engine, and gathers the sensor on the bench calibration system to measure the fuel filter on the engine The resistance value and the oil flow value can be calculated and calibrated to clearly grasp the state of the oil in the oil sump shell 1, obtain maintenance prompt information such as the estimated remaining mileage of the engine that can be operated in good condition, and provide it to the vehicle through the display device 6 The user is beneficial to engine operation and user maintenance; in addition, the present invention adopts the relevant calculation and calibration control strategy of the engine control unit EECU, which can match the vehicle control strategy for intelligent multi-functional calibration design.

The installation height of the sensor: First, the accurate monitoring of the overall quality of the engine oil can provide users with a more reasonable reminder of the oil replacement cycle, and the installation height of the oil quality sensor 2 determines whether the overall quality of the engine oil can be accurately judged. If the oil quality sensor 2 is set If the height is too low, it is easy to detect the deviation of the oil quality. At the same time, the oil quality sensor 2 will absorb various metal or non-metallic impurities, which will easily cause clogging. If the height of the oil quality sensor 2 is set too high, it will judge the oil quality preference, and It is easy to detect no engine oil when the engine is tilted, so the present invention arranges the oil quality sensor 2 on the side of the deep end 11 of the oil pan housing 1, and the distance between the oil quality sensor 2 and the bottom 12 and the minimum liquid level of the engine oil The ratio of the distance between the surface 7 and the bottom 12 is controlled within 1:2 to 1:4, especially the ratio between the distance between the oil quality sensor 2 and the bottom 12 and the distance between the lowest oil level 7 and the bottom 12 is 1 : 3, the overall quality of the engine oil can be accurately judged; secondly, in order to facilitate the control of the calibration strategy, the processor 5 needs to obtain different data parameters of the engine oil in the same area, so the present invention combines the oil quality sensor 2, the temperature sensor 3 and the liquid The surface height sensors 4 are arranged at the same height.

Liquid level sensor: The liquid level sensor 4 in the present invention adopts a pressure type liquid level sensor, and the output signal of the pressure type liquid level sensor is simple, which can simplify the calibration strategy of the processor 5 .

Example 1:

Referring to Fig. 1, an intelligent oil pan assembly for a diesel engine includes an oil pan shell 1, a processor 5 and a display device 6, and the oil pan shell 1 is provided with an oil quality sensor 2, a temperature sensor 3. The liquid level sensor 4, the liquid level sensor 4 is a pressure type liquid level sensor, the processor 5 is an engine control unit EECU, the oil quality sensor 2, the temperature sensor 3, and the liquid level sensor 4 It is connected to the input end of the processor 5, and the output end of the processor 5 is connected to the display device 6; the oil quality sensor 2, the temperature sensor 3, and the liquid level sensor 4 are all arranged in the deep The side of the end 11, and the distance between the oil quality sensor 2, the temperature sensor 3, the liquid level sensor 4 and the bottom 12 of the oil pan shell 1 is equal, and the distance between the oil quality sensor 2 and the bottom 12 The ratio of the distance to the minimum oil level 7 and the distance between the bottom 12 is 1:3, and the bottom 12 is equipped with an oil drain screw plug 8 .

A method for using the intelligent oil pan assembly for the diesel engine, the method includes the following steps in sequence:

a. Install said oil quality sensor 2, temperature sensor 3 and liquid level sensor 4 within the required height range, wherein, oil quality sensor 2, temperature sensor 3, liquid level sensor 4 are connected with the input end of processor 5, process The output terminal of device 5 is connected with display device 6;

b. Before the vehicle is ignited and started, a self-inspection program is first run. The self-inspection program commands the processor 5 to monitor the engine oil level once. If the liquid level is abnormal, that is, if the detected oil level is equal to or less than the minimum oil level 7, the processor 5 will send a liquid level warning message and display it on the display device 6; if the liquid level is normal, then ignite to start the vehicle;

c. In the running process after the vehicle is started, the real-time data monitored by the oil quality sensor 2, the temperature sensor 3, the liquid level sensor 4, and the engine are transmitted to the processor 5, and then the processor 5 according to the received data The real-time monitoring data estimates the remaining good operating mileage of the engine. When it is estimated that the remaining good operating mileage of the engine is 100km, the processor 5 correspondingly sends out the first mileage warning message and displays it on the display device 6; When the remaining good operating mileage of the engine is 50km, the processor 5 correspondingly sends out the second mileage warning message and displays it on the display device 6; when it is estimated that the remaining good operating mileage of the engine is 5km, the processor 5 correspondingly sends out The third mileage warning message is displayed on the display device 6; when it is estimated that the remaining good running mileage of the engine is 0km, the processor 5 controls the engine to take measures to limit torque and speed.

The present invention can not only provide accurate information on the level of the engine oil, estimate the remaining good running mileage of the engine in real time, intelligently prompt the user to maintain the engine lubrication system in real time, but also accurately judge the overall quality of the engine oil; in addition, the present invention is simplified The calibration strategy can also match the vehicle control strategy for intelligent multi-functional calibration design.

Claims (10)

1. An intelligent oil pan assembly for a diesel engine, including an oil pan shell (1), a processor (5) and a display device (6), the oil pan shell (1) is provided with a liquid A surface height sensor (4), the liquid level sensor (4) is connected to the input end of the processor (5), and the output end of the processor (5) is connected to the display device (6), characterized in that: The oil pan housing (1) is also provided with an oil quality sensor (2) and a temperature sensor (3), and the oil quality sensor (2) and the temperature sensor (3) are connected with the input of the processor (5) terminal connection; The processor (5) combines the engine oil level height value provided by the liquid level sensor (4), the real-time oil state parameters provided by the oil quality sensor (2) and the monitoring data of the temperature sensor (3), combined with the sensor on the engine The measured rotation speed and the oil flow rate measured by the sensor on the bench calibration system on the engine are corrected by calibration to obtain an accurate oil level value. 2. The intelligent oil pan assembly for diesel engine according to claim 1, characterized in that: the oil quality sensor (2), temperature sensor (3) and liquid level sensor (4) are all set at The side of the deep end (11) of the oil pan shell (1), and the oil quality sensor (2), temperature sensor (3), liquid level sensor (4) and the oil pan shell (1) The distances between the bottoms (12) are all equal. 3. An intelligent oil pan assembly for a diesel engine according to claim 2, characterized in that: the distance between the oil quality sensor (2), the bottom (12) and the lowest oil level (7) , The ratio of the distance between the bottoms (12) is 1:2-1:4. 4. An intelligent oil pan assembly for a diesel engine according to claim 3, characterized in that: the distance between the oil quality sensor (2), the bottom (12) and the minimum oil level (7) , the ratio of the distances between the bottoms (12) is 1:3. 5. An intelligent oil pan assembly for a diesel engine according to any one of claims 1-4, characterized in that the liquid level sensor (4) is a pressure type liquid level sensor. 6. An intelligent oil pan assembly for a diesel engine according to any one of claims 1-4, characterized in that: the processor (5) is an engine control unit EECU. 7. An intelligent oil pan assembly for a diesel engine according to any one of claims 2-4, characterized in that an oil drain plug (8) is installed on the bottom (12). 8. A method for using the intelligent oil pan assembly for a diesel engine according to claim 1, characterized in that the method for using comprises the following steps in sequence: a. Install the oil quality sensor (2), temperature sensor (3) and liquid level sensor (4) within the required height range, wherein the oil quality sensor (2), temperature sensor (3), liquid level sensor ( 4) Connected to the input terminal of the processor (5), and the output terminal of the processor (5) is connected to the display device (6); b. Before the ignition of the vehicle starts, run the self-inspection program, the self-inspection program instructs the processor (5) to monitor the engine oil level once, and if the liquid level is abnormal, an alarm will be issued; if the liquid level is normal, the ignition will start start the vehicle; c. During the running process after the vehicle is started, the oil quality sensor (2), temperature sensor (3), liquid level sensor (4), and the engine transmit the real-time data monitored by the engine to the processor (5), and then the The processor (5) estimates the remaining good operating mileage of the engine according to the real-time monitoring data it receives, and then controls the vehicle according to the estimated remaining good operating mileage of the engine. 9. A method for using an intelligent oil pan assembly for a diesel engine according to claim 8, characterized in that: In step b, if the liquid level is abnormal, then issuing an alarm means: when the detected oil level is equal to or less than the minimum oil level (7), the processor (5) will issue a liquid level warning information and displayed on the display device (6). 10. A method for using an intelligent oil pan assembly for a diesel engine according to claim 8, characterized in that: In step c, controlling the vehicle according to the estimated remaining good mileage of the engine means: When it is estimated that the remaining good mileage of the engine is 100km, the processor (5) correspondingly sends out the first mileage warning message and displays it on the display device (6); When it is estimated that the remaining good mileage of the engine is 50km, the processor (5) correspondingly sends out a second mileage warning message, which is displayed on the display device (6); When it is estimated that the remaining good running mileage of the engine is 5km, the processor (5) correspondingly sends out a third mileage warning message and displays it on the display device (6); When it is estimated that the remaining good running mileage of the engine is 0km, the processor (5) controls the engine to take measures of limiting torque and speed.