Do I need to warm up the engine in winter
Tips Educational Program / / December 19, 2019
I do not want to read. Can I just answer?
In short, yes, you need to warm up. But not for long: 3-5 minutes will be sufficient. During this time you will have time to brush away the snow and clear glass of ice, and then be able to sit down and quietly go about their business.
Okay. And why bother to warm up, it gives?
At low temperatures, engine oil thickens, and its properties deteriorate. Because of this suffering grease crankshaft, camshaft and other engine components loaded. You need a few minutes to oil It warmed up and restore their quality and lubrication system work effectively.
The engine also takes time to enter the optimal temperature range. Immediately after the start of the bottom of the pistons are rapidly heated by the combustion air-fuel ratio, while the cylinder walls still remain cold. To reduce arising due to changes in temperature stress and prevent premature wear of the engine, you need at least a little to warm him.
Hmm, just warming up is necessary and useful, where disputes?
All differences are caused by the assurances of the manufacturer that the engines of modern cars in warming is not needed. This is true, but only partly. In fact, the recommendations dictated by environmentalists, whose requirements stifle automakers hands and feet.
The point is that in order to maintain stable operation immediately after starting the ECU increases the momentum and enriches the mixture until the engine has warmed up. Worse in the cold fuel evaporates, so the cylinders it served more. This, in turn, entails excess of allowable concentrations of toxic substances in the exhaust.
Operating condition the catalyst, reducing toxicity, exhaust gas temperature is above 300 ° C. To avoid unnecessary emissions, manufacturers recommend to go immediately after starting. Their main purpose - lead indicators of toxicity to normal that the fastest you can do when warming up on the move.
Wait a minute, how fast? So, maybe, and warm on the move?
Under load, the engine really is warming faster, in fact. But at the same time increases and wear. Not yet published to your system mode excessively loaded, why is necessarily reduced resource of individual components and the engine as a whole.
The safety margin will allow the engine to withdraw the guarantee period without any problems. But in the future it will need repairs sooner than the unit, which was operated in a power saving mode. That is why you should not rely solely on the advice automakers.
And what do you do? How to warm up?
The best option would be a compromise: a little warm up the engine, allowing it to run at idle, and then finally to bring it up to operating temperature in motion. Since the oil pump time to pump the oil and stabilize the pressure in the lubrication system. The motor temperature rises, and it will be ready to load.
Not to take away from the engine heat and accelerate the warming up, the heater is better to include not just after the start, and after a while.
To reduce the load on cars with manual gearbox when you start, it is desirable not only to depress the clutch pedal, but hold it a few seconds after the engine starts. Give it a couple of minutes before you hit the road.
Wait, how much warming then?
2-3 minutes will be sufficient. Well, a maximum of 5. By SDARF Government Decree of 23.10.1993 number 1090 "On the rules of the road" more generally, and it is impossible. And it makes no sense. Indications that the engine has started to warm up, will decrease revolutions after starting and Moved to place the temperature sensor arrow.
Modern engines idling warmed rather weakly and reluctantly. Plus, do not forget about the increased consumption fuel. And, of course, about the dangers to the environment.
And that's it? You can go?
Go - yes, drive - no. Temperature until the arrow will not enter into the work area, and the engine is not fully warmed up, it is better not to load. Gently touch and move calmly, avoiding sudden acceleration. Make sure that the value of the tachometer does not exceed 2500 rpm.
Do not forget that in addition to the engine, in the car, there are many other components and assemblies, which are also in need of warming up. Transmission, suspension, power steering, bearings - all this will work as expected, but when you drive down the road a few kilometers.
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