Inverted non-stop apparatus of multi-cylinder diesel engine for free-fall lifeboat

Patent metadata

Field	Value
Publication number	US-10851684-B2
Application number	US-201716500093-A
Country	US
Kind code	B2
Filing date	Dec 1, 2017
Priority date	Jun 8, 2017
Publication date	Dec 1, 2020
Grant date	Dec 1, 2020

Abstract

An inverted non-stop apparatus includes a lubricating system and a breathing system. The lubricating system includes a machine body, an engine oil pump, and an oil pan. A cavity of the oil pan is divided into an oil collection groove and an oil tank body. A flange is provided to form an enclosed lubricating oil tank. The engine oil pump is a double pump including a lubricating pump and an oil return pump. An oil suction port of the oil return pump is connected to the bottom of the oil collection groove, and an oil outlet is connected to the lubricating oil tank. An oil inlet of the lubricating pump is connected to the lubricating oil tank, and an oil outlet is communicated with a main oil path of the machine body. A breathing one-way valve and an air pressure relief valve are provided on the oil tank cover.

First claim

What is claimed is:

1. An inverted non-stop apparatus of a multi-cylinder diesel engine for a free-fall lifeboat, comprising a lubricating system and a breathing system, the lubricating system including a machine body, an engine oil pump, and an oil pan provided at a bottom of the machine body, the breathing system being a diesel engine breather, the diesel engine breather being a communication apparatus for communicating a diesel engine crankcase and an air inlet pipe, wherein a partition board is transversely provided in the oil pan to divide a cavity of the oil pan into a left cavity and a right cavity, the left cavity being an oil collection groove, and the right cavity being an oil tank body; a flange is provided at an opening of the oil tank body for fixing an oil tank cover to form an enclosed lubricating oil tank; the engine oil pump is a double pump having oil inlets and outlets independent separately, which is formed by superposing upper and lower layers, the upper layer being a lubricating pump and the lower layer being an oil return pump; an oil inlet of the oil return pump is connected to a bottom of the oil collection groove through a pipeline, and an oil outlet of the oil return pump is connected to an interior of the lubricating oil tank through a pipeline; an oil inlet of the lubricating pump is connected to the interior of the lubricating oil tank through a pipeline, and an oil outlet of the lubricating pump is connected to an inlet of a machine filter through a pipeline; an outlet of the machine filter is communicated with a main oil path of the machine body; the oil tank cover is provided with a breathing one-way valve and an air pressure relief valve; and an inlet end of the breathing one-way valve is provided below the oil tank cover, and an outlet end of the breathing one-way valve is provided above the oil tank cover.

2. The inverted non-stop apparatus of a multi-cylinder diesel engine for a free-fall lifeboat according to claim 1 , wherein the engine oil pump is provided in the oil collection groove, an upper end of a pump shaft of the engine oil pump extends out of a pump body and penetrates through a bearing hole in the machine body, a worm gear is further provided at a top end of the pump shaft, and meshes with a worm provided on a camshaft of the diesel engine, and an upper end of the pump body of the engine oil pump is provided with a flange fixed to the machine body.

3. The inverted non-stop apparatus of a multi-cylinder diesel engine for a free-fall lifeboat according to claim 1 , wherein the oil return pump comprises a long funnel-shaped oil inlet with a filter screen being provided on a lower left side of the oil collection groove, and a large end of the long funnel-shaped oil inlet faces the bottom of the oil collection groove.

4. The inverted non-stop apparatus of a multi-cylinder diesel engine for a free-fall lifeboat according to claim 1 , wherein the lubricating pump comprises a flexible oil inlet.

5. The inverted non-stop apparatus of a multi-cylinder diesel engine for a free-fall lifeboat according to claim 1 , wherein the lubricating oil tank is a rectangular parallelepiped having a capacity of 8-9 liters and an oil storage capacity of 6-7 liters, and a sealing ring is provided between the oil tank body and the oil tank cover.

6. The inverted non-stop apparatus of a multi-cylinder diesel engine for a free-fall lifeboat according to claim 1 , wherein the breathing one-way valve has a cylindrical casing with an inner wall and an outer wall that are both in shape of single step, an inner diameter and an outer diameter of the casing are smaller at upper end than those at lower end, the upper end is an outlet end of the breathing one-way valve, the lower end is an inlet of the breathing one-way valve, and both inner and outer of the outlet end are provided with thread.

7. The inverted non-stop apparatus of a multi-cylinder diesel engine for a free-fall lifeboat according to claim 6 , wherein an external thread of the outlet end fixes the breathing one-way valve to a left middle of the oil tank cover by a nut.

8. The inverted non-stop apparatus of a multi-cylinder diesel engine for a free-fall lifeboat according to claim 1 , wherein an internal thread of the outlet end is connected to one end of a breathing pipe, the breathing pipe is a 90° bent pipe, and a port of the other end of the breathing pipe is flush with a left side surface of the lubricating oil tank.

9. The inverted non-stop apparatus of a multi-cylinder diesel engine for a free-fall lifeboat according to claim 1 , wherein the communication apparatus is a connection pipe connecting the crankcase and the air inlet pipe, the connection pipe has an inner diameter of 8-10 mm, connection ports namely a crankcase port and an air inlet pipe port are provided at both ends of the connection pipe, the crankcase port is a funnel-shaped port, three semi-enclosed partition boards staggered up and down are provided in the funnel-shaped port axially in sequence, an opening of the funnel-shaped port is perpendicular to a horizontal plane, and the air inlet pipe port is a hinge port.

Assignees

• Univ Jiangsu Science & Tech

Inventors

• Feng Xuedong
• Zhang Jian
• Ling Youlin
• Tang Wenxian
• Sun Anlong
• Feng Yongjun
• Liang Dongsheng
• Chen Cheng
• Li Qiang
• Chen Tong
• Song Xuehui
• Zang Wei
• Shi Jun
• Liang Zhongchen
• Huang Xujin

Classifications

• F01M1/06 Primary

  Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores (crankshafts, connecting-rods, per se F16C) · CPC title

• F01M2011/0095

  Supplementary oil tank · CPC title

• F01M2011/0079

  with the oil pump integrated or fixed to sump · CPC title

• F01M2011/0041

  for accommodating movement or position of engines · CPC title

• F01M13/04

  having means for purifying air before leaving crankcase, e.g. removing oil · CPC title