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How to drive a good car in complex weather?
On automobile drivers under special conditions

Extend the service life of diesel vehicles.

Factors affecting the service life of diesel vehicles under special conditions

A lot, but for car drivers, it is mainly driving practice.

Whether it is done right or not directly affects diesel vehicles.

The service life of. Let's talk about it in combination with our experience.

Special article

Extend the service life of diesel vehicles.

First, the correct driving under special conditions

Correct driving habits include preheating and stepping slowly.

Lift, drive smoothly, shift gears in time, climb freely, and master the temperature.

There is also a set of reasonable operation methods to avoid dust, right?

This is of direct significance for prolonging the service life of diesel vehicles under special conditions.

Influence.

1, don't slam on the accelerator after cold start or before flameout.

Release the start button immediately after the cold start of the diesel engine.

Lift the accelerator pedal to reduce the fuel supply and turn the idle speed regulator.

Adjust the knob to control the diesel vehicle within 600 seconds/minute.

Run until the temperature rises to 50℃, and then turn it down to the diesel engine.

Never work at the lowest stable idle speed or start with load.

Immediately after cold start.

one

Slam on the gas pedal.

Before the diesel engine is turned off, it should be idling for 3 minutes.

Let it cool evenly, and then slightly increase the throttle to increase the speed by 2-3.

Second fully lubricate the surfaces of all components, and then cut off the oil circuit.

Turn off the engine, but don't turn it off for diesel engines with air intake supercharger.

Can slam on the accelerator before the flameout, this is because:

First, the diesel engine after cold start has low water temperature and sticky oil.

Degree, the oil can't quickly enter the parts between the friction pair, if

At this time, the load or speed of the diesel engine suddenly changes when the accelerator is slammed.

The lubrication condition of friction surface of diesel engine moving parts is extremely high.

Poor: Even dry friction will definitely aggravate the wear of parts.

Second, when the working temperature of diesel engine is low, violent oil explosion will occur.

Door, increase fuel injection, combustible mixture

'

The formation of fusion deteriorates,

Incomplete combustion will produce some unburned diesel flushing gas.

The oil film on the cylinder wall will definitely increase the wear rate of the cylinder and piston ring.

Rate, the fuel flows down the cylinder wall and flows into the oil pan for dilution.

Engine oil.

The third supercharged diesel engine does not.

You can slam on the gas pedal. Due to the rotor shaft of the exhaust gas turbocharger

Adopt floating bearing, and stay away from the oil pump, after cold start, the flow

Slow-flowing oil cannot be lubricated quickly.

Idle for a few minutes until the standby oil reaches a certain temperature.

And the load can be increased only after the pressure and pressure are met, so as to avoid sudden increase of the load.

Dry friction will damage the bearing. Operation of exhaust gas turbocharger

The rotating speed can reach 7000-ro0000r/min, if it explodes before flameout.

The throttle and oil pump stopped lubricating because the diesel engine stopped.

Oil is supplied by oil circuit, but the supercharger rotor can still be used due to inertia.

After running at high speed for more than l minutes, the rotor bearing has no feet.

Run with sufficient oil lubrication, even if it is caused by dry friction.

The supercharger was damaged in a short time.

2, diesel engine can't idle for a long time.

Long-term idling can prolong the service life of diesel vehicles.

Life is extremely unfavorable for the following reasons:

First, if the diesel engine idles at low temperature for a long time.

Speed operation, because the diesel engine speed is low, the fuel injection pump speed is also low.

Low, diesel injection speed is slow, intake vortex strength is weakened, and combustion occurs.

Oil can't be sprayed into a good mist, and it is difficult to form quickly with air.

Combustion of a good mixture increases the amount of carbon deposited in the cylinder, which is easy.

Plug the nozzle hole of the fuel injector.

Secondly, due to the low temperature and high viscosity of diesel engine,

Part of unburned diesel oil washes the lubricating oil film on the cylinder wall,

The wear of piston, piston ring and cylinder wall is accelerated, so is diesel oil.

Will be affected by the gas temperature to form colloid and stick to the piston ring.

Knot in the ring groove and lose elasticity, resulting in cylinder sealing.

Not strict, air leakage increases, and even causes cylinder pulling accidents.

Thirdly, due to the low working speed of diesel engine, the oil pump produces oil.

Insufficient, not only can not guarantee the good lubrication of the engine, but also

Because there is no guarantee

.

The oil nozzle injects oil to the bottom of the piston to cool the combustion.

The combustion chamber can't guarantee the best diesel oil film.

Good evaporation temperature (330℃~360℃) leads to the formation of mixed gas.

Poor and incomplete combustion is not conducive to the service life of diesel engine.

Extension.

Secondly, the use of diesel vehicles under special conditions.

Cars are used in high temperature and low temperature, plateau and mountainous areas.

Under special circumstances, the driver must take some necessary measures according to the situation.

Measures should be taken to reduce the wear and tear of parts and prolong the service life of automobiles.

Life.

1, the influence of high temperature on the use of diesel vehicles and its improvement

Heat dissipation capacity of engine cooling system in high temperature environment

Deterioration, the engine is easy to overheat, and the temperature of each assembly of the automobile rises.

High, the viscosity of lubricating oil decreases and the temperature of lubricating oil is high.

It is easy to oxidize and deteriorate, which makes the lubrication performance worse and hot.

There is a lot of dust in the air, and the concentration of water vapor in hot and humid air

The big dust entering the cylinder will form abrasive and accelerate the wear of parts.

Water vapor entering the cylinder will accelerate the corrosion and damage of parts. Therefore,

Under the condition of high temperature, it is necessary to strengthen the cooling when using vehicles.

Measures to improve lubrication are as follows:

.

First of all, properly improve the tightness of the engine fan belt to ensure that

Ventilation certificate; Remove the scale in the cooling system and improve the heat dissipation ability; be filled/suffused/brimming with

Check the cooling water quantity and sealing condition. If conditions permit,

Can increase the number of fan blades or increase the blade angle, increase

Protective ring, replaced by radiator with large water storage capacity, etc.

Second, pay attention to check the lubricating oil level and lubricating oil quantity.

Viscosity, appropriately shorten the oil change cycle. In hot and dusty areas,

If possible, strengthen the cleaning and maintenance of air filters.

You can install an oil radiator and use high-quality lubricating oil.

Third, carefully check the tire pressure, not because the air pressure is too high.

Causes the tire to burst and damage.

2. The influence of low temperature on the use of diesel vehicles and its improvement.

In low temperature environment, the adverse effects on parts are: lubrication.

The lubricating oil is viscous, its fluidity decreases, its lubricating performance deteriorates and it burns.

Poor atomization, mixed with engine oil, makes the quality of engine oil worse; oak

Glue, plastic and other products are easy to become brittle; The cooling water jacket may be

Cooling water freezes and cracks. In view of this situation, at low temperature,

Be sure to do a good job of heat preservation and preheating of the car. Second,

First of all, make preparations before starting at low temperature.

(1) The freezing point is 3℃-5℃ lower than the local minimum temperature.

Use diesel oil in winter to ensure good fluidity of diesel oil.

It is convenient for diesel oil to be mixed with air after being sprayed into the cylinder.

Ignition and combustion into a good mixture; (2) in order to improve the machine

If the viscosity increases at low temperature, the lubrication conditions of oil can be selected.

Large winter lubricating oil; (3) Increase the density of electrolyte and do a good job.

Keep the temperature of the battery and use it as little as possible.

Motivation and timely recharge, to ensure that the battery has

Sufficient capacitance; (4) When the ambient temperature is too low, it will make

Start with a low-temperature starting device, such as Steyr 9 1 series.

When the temperature of the car is low, the starting and thickening device must be pulled out before starting.

Handle, in order to provide excessive fuel combustion, after starting, must be

Push the thickened handle back to its original position.

Second, the engine is equipped with a heat insulation sleeve, which is generally made of leather.

Sew leather or canvas into the hood and fill it with cotton.

Or a thermal insulation material such as felt.

Third, it is best to pour antifreeze into water cooling in winter.

3. The influence of plateau and mountain area on the wear of mechanical parts.

Plateau and mountainous areas, due to high altitude, low air pressure, thin air.

Thin, steep slope, narrow road and many bends have an impact on the life of automobile parts.

These factors are: low air density, rich mixture and insufficient combustion.

It's just the lack of engine power, so the car must always be in low gear.

When driving, the engine speed and temperature are high and the wear is great. Mountainous areas and slopes

Frequent road braking, increased wear of friction linings and continuous friction.

The high heat generated by friction will burn or damage the surface of friction lining.

Cracks. To this end, the following measures can be taken when driving in plateau mountainous areas.

Stone:

First, add a shower pipe in front of the radiator to make the car longer.

When tilting, spray water on the radiator to strengthen cooling and prevent the engine.

Overheating. Second, the brake clearance should be checked frequently and replaced in time.

When the car goes down a long slope, the friction lining will spray water on the brake drum.

However, it is necessary to prevent the friction lining from burning.

4. Control the loading quality

The maximum loading mass of a car must be strictly controlled. Zaiqi

Within the scope specified by the vehicle manufacturer, if it is overloaded, the assembly department

With the increase of workload, the wear rate of parts is obviously accelerated.

Working conditions are often unstable. Axle fracture is easy to occur in winter,

Parts are damaged. In summer, flat tires are very prominent. Captain of diesel engine

Working under heavy load for a long time will cause diesel engines.

Overheating increases wear, which affects the service life of diesel vehicles.

Life. In addition, the car should be loaded according to the specified weight, and

Pay attention to uniform load distribution, because load deviation can also cause

A single part or assembly is damaged.

LZ, look how many words I typed. If you are poor, just choose me as the best, okay ~ ~ ~

My hands are sore.