CN105065072A - V8 type diesel valve drive device - Google Patents

V8 type diesel valve drive device Download PDF

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Publication number
CN105065072A
CN105065072A CN201510414944.8A CN201510414944A CN105065072A CN 105065072 A CN105065072 A CN 105065072A CN 201510414944 A CN201510414944 A CN 201510414944A CN 105065072 A CN105065072 A CN 105065072A
Authority
CN
China
Prior art keywords
cam
swing arm
cylinder
camshaft
bearing journal
Prior art date
Application number
CN201510414944.8A
Other languages
Chinese (zh)
Inventor
姜峰
张元新
潘美俊
张洪涛
Original Assignee
广西科技大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广西科技大学 filed Critical 广西科技大学
Priority to CN201510414944.8A priority Critical patent/CN105065072A/en
Publication of CN105065072A publication Critical patent/CN105065072A/en

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Abstract

A V8 type diesel valve drive device comprises a single cam shaft, air suction and exhaust cams of eight cylinders, and eight groups of swing arms which are arranged coaxially to form a rocker following mechanism. The air suction and exhaust cams are arranged into different phase angles according to a diesel firing sequence. Air suction and exhaust cams of two cylinders are arranged between necks of every two adjacent cam shafts. Each group of swing arms comprises a left swing arm and a right swing arm which are capable of rotating around a swing shaft independently. Positions of the left and right swing arms on the swing shafts correspond to arrangement positions of the air suction and exhaust cams of the eight cylinders on the single cam shaft. The swing shafts are disposed over the cam shaft. The left and right swing arms are disposed on the left and right sides of the cam shaft in a splayed shape respectively. Rollers making contact with the corresponding cams on the cam shaft are connected with the lower ends of the left and right swing arms respectively. The valve drive device is simple in transmission structure, small in friction during transmission, high in valve driving and valve inflation efficiency, effective in power use and capable of being popularized and applied to diesel series of V12, V16 and the like.

Description

A kind of V8 diesel engine valve actuator
Technical field
The present invention relates to a kind of engine components, particularly relate to a kind of V8 diesel engine valve actuator.
Background technique
The V8 diesel engine used at present, the driving of its valve adopts twin cam shaft driving mode, the inlet, outlet cam (often arranging the inlet, outlet cam of a cylinder between adjacent two camshaft bearing journals) of every root cam shaft arrangement 4 cylinders, directly by cam pushing tow valve actuating push rod, control air inlet or the exhaust of valve; The drive unit of this kind of structure exists following not enough:
1. complex structure, takes up room large, dismounting and inconvenient maintenance;
2. directly controlled air inlet or the exhaust of valve by cam pushing tow valve actuating push rod, charging efficiency is not high, affects vehicle economy and power character.
Summary of the invention
The technical problem to be solved in the present invention is, for the shortcoming of prior art, provides a kind of V8 diesel engine valve actuator, to overcome the above-mentioned deficiency existing for prior art.
The technological scheme that the present invention takes is: a kind of V8 diesel engine valve actuator, comprise camshaft, described camshaft is single camshaft, single camshaft is furnished with the inlet and outlet cam of 8 cylinders, described inlet and outlet cam arranges different phase angles by the firing order of diesel engine, often arrange the inlet and outlet cam of 2 cylinders between adjacent two camshaft bearing journals, that is:
The 8th cylinder exhaust cam, the 8th cylinder intake cam, the 1st cylinder intake cam and the 1st cylinder exhaust cam is arranged successively between the 1st camshaft bearing journal and the 2nd camshaft bearing journal;
The 7th cylinder exhaust cam, the 7th cylinder intake cam, the 2nd cylinder intake cam and the 2nd cylinder exhaust cam is arranged successively between the 2nd camshaft bearing journal and the 3rd camshaft bearing journal;
The 6th cylinder exhaust cam, the 6th cylinder intake cam, the 3rd cylinder intake cam and the 3rd cylinder exhaust cam is arranged successively between the 3rd camshaft bearing journal and the 4th camshaft bearing journal;
The 5th cylinder exhaust cam, the 5th cylinder intake cam, the 4th cylinder intake cam and the 4th cylinder exhaust cam is arranged successively between the 4th camshaft bearing journal and tail end camshaft bearing journal;
Described drive unit also comprises rocking arm follower, described rocking arm follower comprises balance staff and coaxial mounted 8 groups of swing arms, often organize swing arm and comprise left swing arm and right swing arm, left swing arm and right swing arm can rotate around balance staff separately and not interfere with each other, and the left swing arm often organizing swing arm is corresponding with the position of the inlet, outlet cam of 8 cylinders on camshaft respectively with the position of right swing arm on balance staff;
Described balance staff is arranged on directly over camshaft, the left swing arm often organizing swing arm becomes "eight" shape to lay respectively at a left side for camshaft with right swing arm, right both sides, left swing arm waist contacts with the intake valve push rod of the cylinder of corresponding group, right swing arm waist contacts with the exhaust valve push rod of the cylinder of corresponding group, left, the lower end of right swing arm is connected to the roller of the cam contact corresponding with on camshaft, when the roller of left swing arm lower end backs down left by the cam that camshaft is corresponding, left swing arm promotes the intake valve push rod of the cylinder of corresponding group thus is opened by the valve of the cylinder of correspondence, when the roller of right swing arm lower end backs down to the right by the cam that camshaft is corresponding, right swing arm promotes the exhaust valve push rod of the cylinder of corresponding group, thus the exhaust valve of the cylinder of correspondence is opened.
Its further technological scheme is: be provided with the grease channel from axle sleeve to roller in described left swing arm and right swing arm.
Owing to adopting technique scheme, a kind of V8 diesel engine valve actuator of the present invention has following beneficial effect:
1. a kind of V8 diesel engine valve actuator of the present invention adopts center arrangement single camshaft driving V-shaped both sides intake valve and exhaust valve, by cam arrangement below roller, and the balance staff of rocking arm follower and the same vertical line of camshaft, the distance of bent axle to camshaft can be reduced, make drive mechanism simpler;
2. the rocking arm follower of a kind of V8 diesel engine valve actuator of the present invention adopts double lever principle, makes single camshaft driving V-shaped both sides inlet and exhaust valve simultaneously, power is more effectively utilized, be conducive to improving engine fuel economy energy;
3. a kind of V8 diesel engine valve actuator of the present invention adopts roller structure, camshaft and rocking arm follower are effectively connected, both valve train structure member can be greatly reduced, the friction in transmittance process can be reduced on the other hand, be conducive to the efficiency and the valve charging efficiency that improve driving valve;
4. a kind of V8 diesel engine valve actuator of the present invention has wide range of applications, and is not merely confined to V8 diesel engine, can arrange different camshafts and corresponding rocking arm follower, be applied at Diesel Series such as V12, V16 according to number of cylinders.
Below in conjunction with embodiment, the technical characteristics of a kind of V8 diesel engine valve actuator of the present invention is further described.
Accompanying drawing explanation
Fig. 1 is a kind of V8 diesel engine valve actuator structural representation of the present invention;
Fig. 2 is the rocking arm follower structural representation of the present invention;
Fig. 3 is single camshaft (cam distribution) structural representation of the present invention;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is existing V8 diesel engine valve actuator structural representation:
Fig. 6 is existing left camshaft (cam distribution) structural representation;
Fig. 7 is existing right camshaft (cam distribution) structural representation;
In figure:
The left camshaft of A-, the right camshaft of B-, C-single camshaft;
1-the 1st camshaft bearing journal, 2-the 2nd camshaft bearing journal, 3-the 3rd camshaft bearing journal, 4-the 4th camshaft bearing journal, 5-tail end camshaft bearing journal, 6-intake valve push rod, 7-exhaust valve push rod, 8-rocking arm follower, 800-balance staff, 810-left swing arm, 811-grease channel, 812-roller, 820-right swing arm, 821-grease channel, 822-roller;
11-the 1st cylinder intake cam, 12-the 1st cylinder exhaust cam, 21-the 2nd cylinder intake cam, 22-the 2nd cylinder exhaust cam, 31-the 3rd cylinder intake cam, 32-the 2nd cylinder exhaust cam, 41-the 4th cylinder intake cam, 42-the 4th cylinder exhaust cam, 51-the 5th cylinder intake cam, 52-the 5th cylinder exhaust cam, 61-the 6th cylinder intake cam, 62-the 6th cylinder exhaust cam, 71-the 7th cylinder intake cam, 72-the 7th cylinder exhaust cam, 81-the 8th cylinder intake cam, 82-the 8th cylinder exhaust cam.
Embodiment
embodiment one
A kind of V8 diesel engine valve actuator, comprise camshaft, described camshaft is single camshaft C, single camshaft C is furnished with the inlet and outlet cam of 8 cylinders, described inlet and outlet cam arranges different phase angles by the firing order of diesel engine, often arrange the inlet and outlet cam of 2 cylinders between adjacent two camshaft bearing journals, that is:
The 8th cylinder exhaust cam 82, the 8th cylinder intake cam 81, the 1st cylinder intake cam 11 and the 1st cylinder exhaust cam 12 is arranged successively between the 1st camshaft bearing journal and the 2nd camshaft bearing journal;
The 7th cylinder exhaust 72 cam, the 7th cylinder intake cam 71, the 2nd cylinder intake cam 21 and the 2nd cylinder exhaust cam 22 is arranged successively between the 2nd camshaft bearing journal and the 3rd camshaft bearing journal,
The 6th cylinder exhaust cam 62, the 6th cylinder intake cam 61, the 3rd cylinder intake cam 31 and the 3rd cylinder exhaust cam 32 is arranged successively between the 3rd camshaft bearing journal and the 4th camshaft bearing journal,
The 5th cylinder exhaust cam 52, the 5th cylinder intake cam 51, the 4th cylinder intake cam 41 and the 4th cylinder exhaust cam 42 is arranged successively between the 4th camshaft bearing journal and tail end camshaft bearing journal;
Described drive unit also comprises rocking arm follower 8, described rocking arm follower comprises balance staff 800 and coaxial mounted 8 groups of swing arms, often organize swing arm and comprise left swing arm 810 and right swing arm 820, left swing arm and right swing arm can rotate around balance staff separately and not interfere with each other, and the left swing arm often organizing swing arm is corresponding with the position of the inlet, outlet cam of 8 cylinders on camshaft respectively with the position of right swing arm on balance staff; (as the left swing arm of the 1st group is corresponding with the 8th cylinder intake cam position, the right swing arm of the 1st group is corresponding with the 8th cylinder exhaust cam position, the left swing arm of the 2nd group is corresponding with the 1st cylinder intake cam position, the right swing arm of the 2nd group is corresponding with the 1st cylinder exhaust cam position, the like ...)
Described balance staff is arranged on directly over camshaft, the left swing arm often organizing swing arm becomes "eight" shape to lay respectively at a left side for camshaft with right swing arm, right both sides, left swing arm waist contacts with the intake valve push rod 6 of the cylinder of corresponding group, right swing arm waist contacts with the exhaust valve push rod 7 of the cylinder of corresponding group, left, the lower end of right swing arm is connected to the roller 812 and 822 of the cam contact corresponding with on camshaft, when the roller of left swing arm lower end backs down left by the cam that camshaft is corresponding, left swing arm promotes the intake valve push rod 6 of the cylinder of corresponding group thus is opened by the valve of the cylinder of correspondence, when the roller of right swing arm lower end backs down to the right by the cam that camshaft is corresponding, right swing arm promotes the exhaust valve push rod 7 of the cylinder of corresponding group, thus the exhaust valve of the cylinder of correspondence is opened.
The grease channel 811 and 821 from axle sleeve to roller is provided with in described left swing arm and right swing arm.
embodiment two
A kind of V12 diesel engine valve actuator, its structure is basic identical with embodiment one, and difference is:
1. single camshaft C is furnished with the inlet and outlet cam of 12 cylinders;
2. rocking arm follower comprises coaxial mounted 12 groups of swing arms.
embodiment three
A kind of V16 diesel engine valve actuator, its structure is basic identical with embodiment one, and difference is:
1. single camshaft C is furnished with the inlet and outlet cam of 16 cylinders;
2. rocking arm follower comprises coaxial mounted 16 groups of swing arms.

Claims (2)

1. a V8 diesel engine valve actuator, comprise camshaft, it is characterized in that: described camshaft is single camshaft (C), single camshaft (C) is furnished with the inlet and outlet cam of 8 cylinders, described inlet and outlet cam arranges different phase angles by the firing order of diesel engine, often arrange the inlet and outlet cam of 2 cylinders between adjacent two camshaft bearing journals, that is:
The 8th cylinder exhaust cam, the 8th cylinder intake cam, the 1st cylinder intake cam and the 1st cylinder exhaust cam is arranged successively between the 1st camshaft bearing journal and the 2nd camshaft bearing journal;
The 7th cylinder exhaust cam, the 7th cylinder intake cam, the 2nd cylinder intake cam and the 2nd cylinder exhaust cam is arranged successively between the 2nd camshaft bearing journal and the 3rd camshaft bearing journal;
The 6th cylinder exhaust cam, the 6th cylinder intake cam, the 3rd cylinder intake cam and the 3rd cylinder exhaust cam is arranged successively between the 3rd camshaft bearing journal and the 4th camshaft bearing journal;
The 5th cylinder exhaust cam, the 5th cylinder intake cam, the 4th cylinder intake cam and the 4th cylinder exhaust cam is arranged successively between the 4th camshaft bearing journal and tail end camshaft bearing journal;
Described drive unit also comprises rocking arm follower (8), described rocking arm follower comprises balance staff (800) and coaxial mounted 8 groups of swing arms, often organize swing arm structure identical, comprise left swing arm (810) and right swing arm (820), left swing arm and right swing arm can rotate around balance staff separately and not interfere with each other, and the left swing arm often organizing swing arm is corresponding with the position of the inlet, outlet cam of 8 cylinders on camshaft respectively with the position of right swing arm on balance staff;
Described balance staff is arranged on directly over camshaft, the left swing arm often organizing swing arm becomes "eight" shape to lay respectively at a left side for camshaft with right swing arm, right both sides, left swing arm waist contacts with the intake valve push rod (6) of the cylinder of corresponding group, right swing arm waist contacts with the exhaust valve push rod (7) of the cylinder of corresponding group, left, the lower end of right swing arm is connected to the roller (812 and 822) of the cam contact corresponding with on camshaft, when the roller of left swing arm lower end backs down left by the cam that camshaft is corresponding, left swing arm promotes the intake valve push rod (6) of the cylinder of corresponding group thus is opened by the valve of the cylinder of correspondence, when the roller of right swing arm lower end backs down to the right by the cam that camshaft is corresponding, right swing arm promotes the exhaust valve push rod (7) of the cylinder of corresponding group, thus the exhaust valve of the cylinder of correspondence is opened.
2. according to claim 1, it is characterized in that: in described left swing arm and right swing arm, be provided with the grease channel (811 and 821) from axle sleeve to roller.
CN201510414944.8A 2015-07-15 2015-07-15 V8 type diesel valve drive device CN105065072A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510414944.8A CN105065072A (en) 2015-07-15 2015-07-15 V8 type diesel valve drive device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510414944.8A CN105065072A (en) 2015-07-15 2015-07-15 V8 type diesel valve drive device

Publications (1)

Publication Number Publication Date
CN105065072A true CN105065072A (en) 2015-11-18

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Family Applications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106761998A (en) * 2017-01-25 2017-05-31 无锡开普机械有限公司 Engine swing arm tappet part

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006092312A1 (en) * 2005-03-03 2006-09-08 Hydraulik-Ring Gmbh Variable mechanical valve control for an internal combustion engine
US20080190386A1 (en) * 2007-02-13 2008-08-14 Gm Global Technology Operations, Inc. Multi-step valve actuation system
CN204239000U (en) * 2013-03-06 2015-04-01 通用电气公司 For the system of the Variable Valve Time of V-type engine
CN204984515U (en) * 2015-07-15 2016-01-20 广西科技大学 V8 type diesel engine valve drive arrangement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006092312A1 (en) * 2005-03-03 2006-09-08 Hydraulik-Ring Gmbh Variable mechanical valve control for an internal combustion engine
US20080190386A1 (en) * 2007-02-13 2008-08-14 Gm Global Technology Operations, Inc. Multi-step valve actuation system
CN204239000U (en) * 2013-03-06 2015-04-01 通用电气公司 For the system of the Variable Valve Time of V-type engine
CN204984515U (en) * 2015-07-15 2016-01-20 广西科技大学 V8 type diesel engine valve drive arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106761998A (en) * 2017-01-25 2017-05-31 无锡开普机械有限公司 Engine swing arm tappet part

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Application publication date: 20151118

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