CN111412080A

CN111412080A - Cylinder block oil circuit

Info

Publication number: CN111412080A
Application number: CN202010213008.1A
Authority: CN
Inventors: 蒙小聪; 覃海玉; 董家枝; 刘显宏; 陈楚枫
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-07-14

Abstract

The invention discloses an oil way of a cylinder block, which comprises a main oil duct, a transverse oil duct, a longitudinal oil duct and a branch oil duct, wherein the main oil duct is arranged on the exhaust side of an engine and penetrates through the front end and the rear end of the cylinder block; the longitudinal oil duct penetrates through the transverse oil duct and is communicated with the idler shaft lubricating oil port; one end of the branch oil duct is communicated with the longitudinal oil duct, the other end of the branch oil duct is a processing process port, and the middle of the branch oil duct is communicated with an air pump lubricating oil port. The invention not only realizes the functions of lubrication and the like of all functional parts at the same time, simplifies the design of the oil path of the lubrication system, is arranged in the gear chamber at the rear end of the cylinder body and is criss-cross, and simultaneously, the wall of the oil path serves as the reinforcing rib of the cylinder body, thereby obviously enhancing the integral structural strength of the cylinder body and improving the structural strength of the cylinder body.

Description

Cylinder block oil circuit

Technical Field

The invention relates to the technical field of engines, in particular to an oil way of an air cylinder body.

Background

When the light engine is designed, various necessary functional parts need to be arranged in a limited space, and particularly in the implementation stage of the national six-emission regulation, more functional parts need to be added in the engine design, so that higher requirements on the compactness of the arrangement are made in the engine design.

The following are the main problems encountered during deployment:

1. the matching cabin of the light engine is relatively small, one of the functions required to be matched by the engine cannot be few, and the arrangement design space of each functional part is very limited;

2. different functional parts are designed respectively, so that the cost is high.

Therefore, it is necessary to consider the multifunctional integration design as much as possible while ensuring performance and cost control in the engine layout. The engine is generally provided with various functional parts and accessories, part of the parts (such as a chain tensioner, a chain lubrication injection valve, an idler shaft, an air pump and the like) need to be lubricated by a lubricating system of the engine or provided with hydraulic oil, and the lubricating oil is connected with the inlet oil and the return oil through pipelines. The oil inlet and return pipeline is externally arranged, so that the whole engine has many penetrating pipelines, messy appearance, large size of the whole engine and high cost of the engine.

Disclosure of Invention

In order to solve the problems, the invention provides an oil way of a cylinder block, which not only realizes the functions of lubrication and the like of all functional parts at the same time and simplifies the oil way design of a lubrication system, but also is arranged at the bottom of a gear chamber at the rear end of the cylinder block and is criss-cross, and the wall of the oil way is used as a reinforcing rib of the cylinder block, so that the oil way has obvious reinforcing effect on the overall structural strength of the cylinder block and improves the structural strength of the cylinder block.

The invention adopts the following technical scheme to realize the purpose:

an oil way of a cylinder block comprises a main oil duct, a transverse oil duct, a longitudinal oil duct and a branch oil duct, wherein the main oil duct is arranged on an exhaust side of an engine and penetrates through the front end and the rear end of the cylinder block; the longitudinal oil duct penetrates through the transverse oil duct and is communicated with an idler shaft lubricating oil port; one end of the branch oil duct is communicated with the longitudinal oil duct, the other end of the branch oil duct is a processing process port, and the middle of the branch oil duct is communicated with an air pump lubricating oil port.

Preferably, the longitudinal oil passage penetrates the transverse oil passage through a second machining process port.

Preferably, the transverse oil passage and the longitudinal oil passage are both cast from gray iron and are manufactured by a machining process respectively.

Preferably, a chain lubrication injection valve mounting lug is arranged on the transverse oil passage, and an oil port of the chain lubrication injection valve is machined on the chain lubrication injection valve mounting lug.

Preferably, a chain tensioner mounting lug is arranged on the transverse oil channel, and the chain tensioner oil port is machined on the chain tensioner mounting lug.

Preferably, an idler shaft mounting seat is arranged on the longitudinal oil passage, and the idler shaft lubricating oil port is machined in the idler shaft mounting seat.

Preferably, an air pump lubricating oil port mounting lug is arranged on the branch oil duct, and the air pump lubricating oil port is machined on the air pump lubricating oil port mounting lug.

The invention has the beneficial effects that:

1. the design of an oil way of a lubricating system is simplified, so that the engine has a compact structure, small overall dimension and high adaptability;

2. the oil duct serves as a reinforcing rib at the same time, and the structural strength of the cylinder body is high;

3. each functional part is not provided with a transitional connecting pipeline part, so that the quantity of oil circuit parts of the lubricating system is small, the assembly process is simplified, and the manufacturing cost of the engine is low;

4. the combined sealing surface is less, the hidden danger of engine leakage is less, and the reliability of the engine is improved;

5. the cylinder block oil way is simple to process and easy to popularize.

Drawings

Fig. 1 is a perspective view of a cylinder block oil passage provided by the present invention;

fig. 2 is a sectional view of the cylinder block oil passage provided by the present invention.

In the figure, 1-a cylinder body, 2-a main oil channel, 3-a transverse oil channel, 4-a longitudinal oil channel, 5-a branch oil channel, 6-a chain lubrication injection valve oil port, 7-a chain tensioner oil port, 8-an idler shaft lubrication oil port, 9-an air pump lubrication oil port, 10-a first machining process port, 11-a second machining process port, 12-an air pump flange, 13-an air pump oil return port, 14-an idler shaft mounting seat, 15-an oil channel wall, and 16-a third machining process port.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings 1-2 and the detailed description thereof.

Referring to fig. 1 and 2, the present invention provides a cylinder block oil passage including a main oil gallery 2 disposed on an exhaust side of an engine and penetrating front and rear ends of a cylinder block 1. The invention also comprises a transverse oil passage 3, a longitudinal oil passage 4 and a branch oil passage 5 which are arranged in the rear end gear chamber of the cylinder body 1. One end of the transverse oil duct 3 is communicated with the main oil duct 2, and the other end of the transverse oil duct stretches across the gear chamber and is respectively communicated with a chain lubrication injection valve oil port 6 and a chain tensioner oil port 7. The longitudinal oil passage 4 penetrates through the transverse oil passage 3, and the longitudinal oil passage 4 is communicated with an idler shaft lubricating oil port 8. One end of the branch oil duct 5 is communicated with the longitudinal oil duct 4, the other end of the branch oil duct is a processing process port, and the middle of the branch oil duct is communicated with an air pump lubricating oil port 9.

When the cylinder block oil way is used, lubricating oil in the main oil gallery 2 flows into the transverse oil gallery 3 and further respectively flows into a chain lubricating injection valve oil port 6 and a chain tensioner oil port 7 which are positioned on the transverse oil gallery 3, so that the chain lubricating injection valve and the chain tensioner are respectively lubricated. The lubricating oil in the transverse oil duct 3 is also communicated into the longitudinal oil duct 4 and further communicated into an idler shaft lubricating oil port 8 on the longitudinal oil duct 4 so as to lubricate an idler shaft. The lubricating oil in the longitudinal oil passage 4 is communicated into the branch oil passage 5 and further communicated into an air pump lubricating oil port 9 on the branch oil passage 5 so as to lubricate an air pump.

Further, the transverse oil passage 3 and the longitudinal oil passage 4 are both cast from gray iron and are manufactured by machining processes, respectively.

Further, the left end of the transverse oil duct 3 is connected with the inner wall of the gear chamber through the first machining process port 10, and the left end of the transverse oil duct 3 is sealed through a sealing element, so that engine oil is prevented from leaking. In this embodiment, the seal is a sealing plug. Chain lubrication injection valve mounting lugs and chain tensioner mounting lugs are arranged on the transverse oil duct 3 at intervals. The lubricated injection valve hydraulic fluid port 6 of chain is processed on the lubricated injection valve installation lug of chain, and the lubricated injection valve hydraulic fluid port 6 of chain runs through processing with horizontal oil duct 3, makes the lubricated injection valve hydraulic fluid port 6 of machine oil accessible chain provide lubricating oil for the chain injection valve, and the chain injection valve directly returns to the gear room bottom through spraying behind the lubricated chain of lubricating oil, flows back to the oil pan. The chain tensioner oil port 7 is machined on the chain tensioner mounting lug. The chain tensioner oil port 7 and the transverse oil duct 3 penetrate through machining, engine oil can be supplied to the chain tensioner through the chain tensioner oil port 7 to achieve chain tensioning and working surface lubrication, and the engine oil returns to the gear chamber and finally returns to an oil sump.

Further, one end of the longitudinal oil passage 4 penetrates through the transverse oil passage 3 through the second machining process port 11, and the second machining process port 11 is sealed through a sealing member, so that engine oil is prevented from leaking. In this embodiment, the seal is a sealing plug. The invention reduces the combined sealing surface of the integral lubricating oil path, has less hidden danger of engine leakage, and improves the reliability of the engine. An idler shaft mounting seat 14 is arranged on the longitudinal oil passage 4. An idler shaft lubricating oil port 8 is machined in an idler shaft mounting seat 14. The idler shaft lubricating oil port 8 and the longitudinal oil duct 4 are penetrated through by machining, so that engine oil in the main oil duct 2 flows through the transverse oil duct 3, then flows to the longitudinal oil duct 4 and then flows to the idler shaft lubricating oil port 8, and then provides lubricating oil for the idler shaft, and the lubricating oil directly returns to the gear chamber and finally flows back to the oil pan.

Further, one end of the branch oil passage 5, which is far away from the longitudinal oil passage 4, penetrates through the air pump lubricating oil port 9 through a third machining process port 16. The third process port 16 is sealed by a seal member to prevent leakage of the engine oil. In this embodiment, the seal is a sealing plug. An air pump lubricating oil port mounting lug is arranged on the branch oil duct 5, and an air pump lubricating oil port 9 is machined on the air pump lubricating oil port mounting lug. The air pump lubricating oil port 9 is processed to penetrate through the air pump flange 12, engine oil can enter the air pump lubricating oil passage through the oil passage to lubricate the kinematic pair, and the engine oil returns to the gear chamber through the air pump oil return port 13 at the bottom of the air pump after lubricating the air pump and finally flows back to the oil pan.

The arrangement of various mounting lugs and mounting seats ensures that each oil port penetrates through the corresponding oil duct by processing, ensures that each functional part has no transition connection oil path structure, ensures that the number of oil path parts of the lubricating system is small, the assembly process is simplified, and the manufacturing cost of the engine is low.

Further, the oil passage walls 15 of the transverse oil passage 3, the longitudinal oil passage 4 and the branch oil passage 5 serve as reinforcing ribs of the cylinder block 1, so that the overall structural strength of the cylinder block 1 is obviously enhanced, and the structural strength of the cylinder block 1 is improved.

Although the invention has been described in detail above with reference to specific embodiments, it will be apparent to one skilled in the art that modifications or improvements may be made based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The cylinder block oil way comprises a main oil duct which is arranged on the exhaust side of an engine and penetrates through the front end and the rear end of a cylinder block, and is characterized by further comprising a transverse oil duct, a longitudinal oil duct and a branch oil duct which are arranged in a gear chamber at the rear end of the cylinder block, wherein one end of the transverse oil duct is communicated with the main oil duct, and the other end of the transverse oil duct stretches across the gear chamber and is respectively communicated with a chain lubrication injection valve oil port and a chain tensioner oil port; the longitudinal oil duct penetrates through the transverse oil duct and is communicated with an idler shaft lubricating oil port; one end of the branch oil duct is communicated with the longitudinal oil duct, the other end of the branch oil duct is a processing process port, and the middle of the branch oil duct is communicated with an air pump lubricating oil port.

2. The cylinder block oil passage according to claim 1, wherein the longitudinal oil passage penetrates the lateral oil passage through a second machining process port.

3. The cylinder block oil passage according to claim 1, wherein the lateral oil passage and the longitudinal oil passage are each cast of gray iron and are respectively manufactured through a machining process.

4. The cylinder block oil passage according to claim 1, wherein a chain lubrication injection valve mounting lug is provided on the lateral oil passage, and the chain lubrication injection valve port is machined on the chain lubrication injection valve mounting lug.

5. The cylinder block oil passage of claim 1, wherein a chain tensioner mounting lug is provided on the lateral oil passage, and the chain tensioner port is machined on the chain tensioner mounting lug.

6. The cylinder block oil circuit according to claim 1, wherein an idler shaft mounting seat is provided on the longitudinal oil passage, and the idler shaft lubricating oil port is machined on the idler shaft mounting seat.

7. The cylinder block oil passage according to claim 1, wherein an air pump lubrication port mounting lug is provided on the branch oil passage, and the air pump lubrication port is machined on the air pump lubrication port mounting lug.