CN104962362A

CN104962362A - Lubricating agent for piston type cam engine

Info

Publication number: CN104962362A
Application number: CN201510426933.1A
Authority: CN
Inventors: 黄福川; 黄豪中; 邓富康; 李康春; 韦开焕; 马骁飞; 黄旖瑶
Original assignee: Guangxi University
Current assignee: Guangxi University
Priority date: 2015-07-20
Filing date: 2015-07-20
Publication date: 2015-10-07

Abstract

The invention discloses a lubricating agent for a piston type cam engine. According to the lubricating agent, poly-internal-olefin and metallocene PAO (synthetic base oil) are compounded into base oil and are matched with a plurality of additives. The lubricating agent comprises a cleaning agent, a dispersing agent, an anti-oxidization preservative, an anti-oxidant, an aid, an extreme pressure agent, an anti-wear agent, a friction improver, a metal deactivator, an anti-rusting agent and an anti-foaming agent. The lubricating agent can be directly applied to a lubricating system of the piston type cam engine and has the beneficial effects that the lubricating property, cooling property, sealing property, cleaning property, rust resistance, liquidity and startability are good, the neutralization capacity for dispersing oil sludge and acid is strong, the surface smoothness of a kinematic pair is high, the base value holding period is long, the operation is convenient, and the cost is low.

Description

Piston-type cam engine lubricant

Technical field

The invention belongs to engine lubricant field, particularly piston-type cam engine lubricant.

Background technology

Piston-type cam engine utilizes cam that the to-and-fro movement of piston is changed into the rotary motion of engine shaft, multiple cylinder is circumferentially arranged, simple and compact for structure, lightweight, balance is good, power-mass ratio is large, is applicable to the operating mode that active power, size, weight indicator requirement are high.

Piston-type cam engine structure is divided into two large classes usually: a class is the parts (interior shaft assembly comprises: cam, interior axle, distributing valve etc.) of following the rotation of interior axle; Another kind of be along with outer shaft rotate parts (outer shaft assembly comprises: outer shaft, cylinder body, piston).When engine work, interior shaft assembly and outer shaft assembly all rotate, but turning to of they is contrary.When interior outer shaft rotates backward, the work times of piston, the number of times rotated separately than interior axle is fast again, and thus increasing is also twice by power, one of key that Here it is cam engine unit power mass ratio is large.

The cam of engine is the key components and parts of transport sector, and it is used to balance and connects firmly with interior axle, and its periphery has a waviness chimb, the forward and backward two sides of this chimb is all working face.Leading face is saddle type space curved surface, and it has two protruding forward peaks and two to the mouth be recessed into.The rear working face of cam is back work face, it is narrower and almost parallel with leading face, the lower end of piston rod is equipped with two large and small rollers separated by a distance, and they overlap the chimb of cam to present tenon oral hook therebetween, and produces association against the rotation of cam respectively.Due to cam double peak to valley, therefore when inside and outside axle rotates a circle relatively, each piston will do work twice.

Usual cam engine has special cooling system, but does not have special oiling system.Except the part of heavy loading, as the axle of big roller, with the oil suction pipe rotated along with interior axle, rely on dynamic pressure to draw lubricant from cam case and carry out lubrication by oil circulation, other vitals then relies on the lubricating grease of pre-equipment and the lubricant in splashing face to lubricate.

Summary of the invention

The technical problem to be solved in the present invention is to provide one and has good lubricating properties, cooling, stopping property, cleaning, rust-preventing characteristic, mobility and startability, dispersion greasy filth, acid neutralization capacity be strong, make that movement pair surface is highly polished, base number hold period is long, easy to operate, cheap piston-type cam engine lubricant.

The present invention adopts following technical scheme to solve the problems of the technologies described above:

Piston-type cam engine lubricant, adopt the poly-internal olefin of mass ratio 50% and the metallocene PAO synthetic base oil of 50% to be complex as base oil, coordinate multiple additives, its each component and mass percent thereof are:

Component	Mass percent content
		Base oil	Surplus
Clean-out system	6％～7％
		Dispersion agent	6％～7％
Antioxidant preservative	0.3％～0.4％
		Oxidation inhibitor	0.6％～0.8％
Auxiliary agent	2％～3％
		Extreme pressure agent	2％～3％
Anti-wear agent	2％～3％
		Friction improver	3％～4％
Metal passivator	0.3％～0.5％
		Rust-preventive agent	0.2％～0.4％
Kilfoam	30ppm～70ppm

Purification agent be the magnesium naphthenate of mass ratio 30%, the Overbased magnesium sulphonates of 30% and 40% magnesium alkylsalicylate compound.

Dispersion agent is polyisobutene succinimide T154.

Antioxidant preservative is the dialkyldithiocarbamacompositions tungsten of mass ratio 50% and the molybdenum dithiophosphate MoDTP compound of 50%;

Oxidation inhibitor is the 124 Triazole derivative of mass ratio 50% and the thiadiazole compound of 50%.

Auxiliary agent is boronation ammonium phosphate ester;

Extreme pressure agent is triethyl phosphate.

Anti-wear agent is thiophosphoric acid phenyl ester T309.

Friction improver is alkyl phosphite.

Metal passivator is N-phenyl-a-naphthylamine.

Rust-preventive agent is barium dinonyl napthalene sulphonate T705.

Kilfoam is dimethyl silicone oil.

Remarkable advantage of the present invention: there is good lubricating properties, cooling, stopping property, cleaning, rust-preventing characteristic, mobility and startability, dispersion greasy filth, acid neutralization capacity be strong, make that movement pair surface is highly polished, base number hold period is long, easy to operate, cheap.

Embodiment

Embodiment 1: each component is in harmonious proportion by following mass percent and forms:

The summation of each constituent mass relative content is 100% above.

Embodiment 2:

Each component is in harmonious proportion by following mass percent and forms:

The summation of each constituent mass relative content is 100% above.

Embodiment 3:

Each component is in harmonious proportion by following mass percent and forms:

The summation of each constituent mass relative content is 100% above.

The main physical and chemical index of embodiment 3 product:

Project	Quality index
		Kinematic viscosity (40 DEG C)/cmm ²/s	109.5
Viscosity index	126
		Borderline pumping temperature/DEG C	-35
Flash-point (opening)/DEG C	226
		Pour point/DEG C	-38
Moisture/%	Vestige
		Throw out/%	Nothing
Sulfated ash/%	0.98
		Base number (mgKOH/g)	9.2
Supporting capacity/P _B/N	812

Claims

1. piston-type cam engine lubricant, is characterized in that: adopt the poly-internal olefin of mass ratio 50% and the metallocene PAO synthetic base oil of 50% to be complex as base oil, coordinate multiple additives, its each component and mass percent thereof are:

Base oil surplus,

Clean-out system 6% ~ 7%,

Dispersion agent 6% ~ 7%,

Antioxidant preservative 0.3% ~ 0.4%,

Oxidation inhibitor 0.6% ~ 0.8%,

Auxiliary agent 2% ~ 3%,

Extreme pressure agent 2% ~ 3%,

Anti-wear agent 2% ~ 3%,

Friction improver 3% ~ 4%,

Metal passivator 0.3% ~ 0.5%,

Rust-preventive agent 0.2% ~ 0.4%,

Kilfoam 30ppm ~ 70ppm.

2. piston-type cam engine lubricant as claimed in claim 1, is characterized in that, purification agent be the magnesium naphthenate of mass ratio 30%, the Overbased magnesium sulphonates of 30% and 40% magnesium alkylsalicylate compound.

3. piston-type cam engine lubricant as claimed in claim 1, it is characterized in that, dispersion agent is polyisobutene succinimide T154.

4. piston-type cam engine lubricant as claimed in claim 1, it is characterized in that, antioxidant preservative is the dialkyldithiocarbamacompositions tungsten of mass ratio 50% and the molybdenum dithiophosphate MoDTP compound of 50%; Oxidation inhibitor is the 124 Triazole derivative of mass ratio 50% and the thiadiazole compound of 50%.

5. piston-type cam engine lubricant as claimed in claim 1, it is characterized in that, auxiliary agent is boronation ammonium phosphate ester; Extreme pressure agent is triethyl phosphate.

6. piston-type cam engine lubricant as claimed in claim 1, it is characterized in that, anti-wear agent is thiophosphoric acid phenyl ester T309.

7. piston-type cam engine lubricant as claimed in claim 1, it is characterized in that, friction improver is alkyl phosphite.

8. piston-type cam engine lubricant as claimed in claim 1, it is characterized in that, metal passivator is N-phenyl-a-naphthylamine.

9. piston-type cam engine lubricant as claimed in claim 1, it is characterized in that, rust-preventive agent is barium dinonyl napthalene sulphonate T705.

10. piston-type cam engine lubricant as claimed in claim 1, it is characterized in that, kilfoam is dimethyl silicone oil.