CN113236397A

CN113236397A - Engine-exhausted oil system

Info

Publication number: CN113236397A
Application number: CN202110468090.7A
Authority: CN
Inventors: 覃壮革; 覃文; 邓建林; 廖升友; 陶正勇
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-08-10

Abstract

The invention discloses an engine spent oil system, which comprises: spare machine oil tank, vehicle gas holder and solenoid valve. The standby oil tank is used for storing the oil. The vehicle air storage tank is used for providing compressed air. And the one end of solenoid valve is connected with the vehicle gas holder, and the other end of solenoid valve is connected with the one end of reserve machine oil case, and solenoid valve and ECU electric connection. The other end of the spare oil tank is used for being connected with a main oil gallery of the engine. When the ECU automatically recognizes that the engine is short of oil, the ECU controls the electromagnetic valve to be opened, so that the engine oil in the standby engine oil tank flows into the engine main oil gallery under the action of the pressure of compressed gas. Therefore, the engine oil-lacking system of the engine is simple and reasonable in structure, and can ensure that the engine can continuously keep full-speed and full-load power output in a short time after the engine loses the lubricating oil of the oil pan.

Description

Engine-exhausted oil system

Technical Field

The invention relates to a diesel engine for a special vehicle, in particular to an engine oil-lacking system of an engine.

Background

Diesel engines for vehicles are provided with an oil sump in the lower part, which functions to store lubricating oil. The lubricating system is an internal circulating system, lubricating oil is pumped from an oil sump by an oil pump, pressure is increased, the lubricating oil is filtered and cooled and then is conveyed to a main oil duct of the engine and then is conveyed to each lubricating node through each channel to complete the functions of lubrication, cooling, cleaning and the like, and then the lubricating oil returns to the oil sump to complete circulation. The key of the lubricating system is to establish clean lubricating oil with proper pressure and temperature of the main oil gallery. The oil pressure of the main oil gallery is important for the first time. Once the pressure is too low, key kinematic pairs such as a crankshaft journal and a connecting rod journal are inevitably burned and locked due to the fact that an oil film cannot be established, and serious faults of the engine are caused. The pressure of the main oil gallery is regulated by the output pressure of the oil pump and devices such as a pressure relief valve, a pressure regulating valve, a bypass valve and the like in the oil passage. Provided that the oil sump has sufficient lubrication oil.

When the engine runs at a high speed and a high load, if the oil pan of the engine is broken under a certain accident condition, the lubricating oil is completely leaked, at the moment, the main oil duct and all lubricating nodes of the engine do not have the lubricating oil, and serious faults such as locking of a bush-burning crankshaft of the engine and the like can be caused. This is particularly the case when the vehicle is used as equipment for transporting personnel in a battlefield, which directly affects the life safety of the soldier.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The invention aims to provide an engine-out oil system which is simple and reasonable in structure and can ensure that the engine can continuously keep full-speed and full-load power output in a short time after the engine loses lubricating oil of an oil pan.

In order to achieve the above object, the present invention provides an engine-out oil system, including: spare machine oil tank, vehicle gas holder and solenoid valve. The standby oil tank is used for storing the oil. The vehicle air storage tank is used for providing compressed air. And the one end of solenoid valve is connected with the vehicle gas holder, and the other end of solenoid valve is connected with the one end of reserve machine oil case, and solenoid valve and ECU electric connection. The other end of the spare oil tank is used for being connected with a main oil gallery of the engine. When the ECU automatically recognizes that the engine is short of oil, the ECU controls the electromagnetic valve to be opened, so that the engine oil in the standby engine oil tank flows into the engine main oil gallery under the action of the pressure of compressed gas.

In an embodiment of the present invention, the engine-poor oil system further includes a pressure regulating valve disposed between the vehicle air storage tank and the solenoid valve, and the pressure regulating valve is configured to regulate an air pressure of the compressed air entering the spare oil tank.

In one embodiment of the present invention, the pressure regulating valve is a mechanical pressure regulating valve.

In an embodiment of the present invention, the engine-poor oil system further includes a check valve disposed between the standby oil tank and the engine main oil gallery.

In one embodiment of the invention, the check valve is configured to allow oil to flow only from the reserve tank into the engine main gallery.

In one embodiment of the invention, when the ECU automatically identifies that the engine is out of oil, the ECU sends an alarm signal to the instrument, and the instrument gives an alarm to prompt a driver.

Compared with the prior art, the engine-out-of-oil system of the engine has a simple and reasonable structure, and can ensure that the engine can continue to keep full-speed full-load power output in a short time after the engine loses the lubricating oil of the oil pan.

Drawings

FIG. 1 is a schematic block diagram of an engine-out oil system according to an embodiment of the present disclosure;

fig. 2 is a logic wire frame schematic diagram of an engine-out oil system according to an embodiment of the invention.

Description of the main reference numerals:

1-spare engine oil tank, 2-vehicle air storage tank, 3-electromagnetic valve, 4-engine main oil gallery, 5-pressure regulating valve, 6-one-way valve.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

Fig. 1 is a schematic wire-frame structure diagram of an engine-out oil system according to an embodiment of the present invention. Fig. 2 is a logic wire frame schematic diagram of an engine-out oil system according to an embodiment of the invention.

As shown in fig. 1 to 2, an engine-poor oil system according to a preferred embodiment of the present invention includes: a spare oil tank 1, a vehicle air storage tank 2 and an electromagnetic valve 3. The backup oil tank 1 stores oil. The vehicle gas tank 2 is used to supply compressed gas. And the one end of solenoid valve 3 is connected with vehicle gas holder 2, and the other end of solenoid valve 3 is connected with the one end of reserve machine oil tank 1, and solenoid valve 3 and ECU electric connection. Wherein the other end of the spare oil tank 1 is used for connecting with the main oil gallery 4 of the engine. When the ECU automatically recognizes that the engine is short of oil, the ECU controls the electromagnetic valve 3 to be opened, so that the oil in the standby oil tank 1 flows into the engine main oil gallery 4 under the action of the pressure of compressed gas.

In an embodiment of the present invention, the engine-poor oil system further includes a pressure regulating valve 5 disposed between the vehicle air storage tank 2 and the electromagnetic valve 3, and the pressure regulating valve 5 is used for regulating the pressure of the compressed gas entering the spare oil tank 1. The pressure regulating valve 5 is a mechanical pressure regulating valve 5.

In an embodiment of the present invention, the engine-poor oil system further includes a check valve 6 disposed between the standby oil tank 1 and the engine main oil gallery 4. The check valve 6 is provided to allow oil to flow only from the reserve tank 1 into the engine main gallery 4.

In practical application, the engine-poor oil system of the invention is associated with the engine, namely the spare oil tank 1 and the main oil gallery of the engine, the electromagnetic valve 3 is associated with the ECU of the engine, and the system monitors the pressure of the main oil gallery. The reserve tank 1 is primed with a quantity of lubricating oil (e.g. 10L) depending on calibration. When the engine runs at a high rotating speed and a large load and runs suddenly, the ECU monitors that the pressure of the main oil gallery 4 of the engine is lower than a set threshold value, the ECU automatically recognizes that the engine runs out of the engine and automatically opens the control electromagnetic valve 3 at the spare oil tank 1, and the engine oil of the spare oil tank 1 is pressed into the main oil gallery 4 of the engine under the air pressure of the air storage tank 2 of the vehicle, so that the engine can run normally in a short time. And when the engine oil shortage function is started, the ECU sends an alarm signal to the instrument, the instrument gives an alarm to prompt a driver that the engine oil shortage function is started at the moment and is in a dangerous condition, and the driver can carry out emergency risk avoidance treatment. As shown in fig. 2, the system regulates the main gallery oil pressure by controlling the opening of the solenoid valve 3 at a constant compressed air pressure. The opening degrees as shown in fig. 2 all refer to the opening degree of the adjustable solenoid valve 3 (oil). The control idea is as follows: when the engine runs out of oil, the engine-out function is started, so that the oil pressure of the main oil gallery 4 of the engine is kept to be circulated between 5s 200kPa +30s 150kPa during medium and high loads, and is kept to be 150kPa during low loads. If the ECU monitors that the oil pressure is less than 150kPa and the engine speed is greater than 1000r/min, the electromagnetic valve 3 is opened and the opening of the electromagnetic valve 3 is adjusted through the pressure adjusting valve 5, the opening is continuously adjusted if the oil pressure is not proper, the opening lasts for 30s if the oil pressure is proper, whether the opening of the accelerator is larger than 40% or not is judged, if the opening is proper, the oil is continuously supplied, whether the oil pressure is proper or not is checked again, the opening lasts for 5s if the oil pressure is proper, then the opening is reduced, and if the oil pressure is not proper, the opening is continuously adjusted.

In a word, the engine oil-lacking system of the invention has simple and reasonable structure, is applied to the engine, and under special conditions (such as in war, the oil pan is punctured), the system is automatically triggered and acted at the moment when the oil pan of the engine completely loses lubricating oil, so as to ensure that the engine can continuously keep full-speed and full-load output power in a short time after the lubricating oil of the oil pan of the engine is lost, ensure that vehicles can rapidly withdraw from a war chariot and break away from a dangerous situation, and achieve the purpose of protecting the life safety of fighters.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. An engine spent oil system, comprising:

a standby engine oil tank for storing engine oil;

a vehicle air reservoir for providing compressed air; and

one end of the electromagnetic valve is connected with the vehicle gas storage tank, the other end of the electromagnetic valve is connected with one end of the spare oil tank, and the electromagnetic valve is electrically connected with the ECU;

the other end of the spare oil tank is used for being connected with a main oil gallery of the engine;

when the ECU automatically recognizes that the engine is short of oil, the ECU controls the electromagnetic valve to be opened, so that the oil in the standby oil tank flows into the engine main oil gallery under the action of the pressure of the compressed gas.

2. The spent engine oil system according to claim 1, further comprising a pressure regulating valve disposed between the vehicle reservoir and the solenoid valve, the pressure regulating valve being configured to regulate the pressure of the compressed gas entering the backup oil tank.

3. The spent engine oil system of claim 2, wherein the pressure regulating valve is a mechanical pressure regulating valve.

4. The spent engine oil system according to claim 1, further comprising a check valve disposed between the reserve tank and the engine main gallery.

5. The spent engine oil system according to claim 4, wherein the check valve is configured to allow the oil to flow only from the reserve tank to the engine main gallery.

6. The engine-poor oil system of claim 4, wherein when the ECU automatically recognizes that the engine is out of oil, the ECU sends a warning signal to a meter, and the meter gives a warning to prompt a driver.