Many have noticed that the engines of modern cars warm up very long. This applies primarily to diesel engines and petrol with turbocharging and direct injection are not present.Alexey Revin “driving”Expert
If you remember history, the first car heater was not at all. Then the designers realized that it is possible to use part of the heat produced by the engine to heat the passenger compartment. On engines with liquid cooling appeared normal stove, and the “vents” this problem is still not solved.
But here’s the thing: modern gas engines of expensive cars warmed up, sometimes longer than the old carbureted engines to Lada. How so? However, do we really need a quick warming up of the engine? Yes, and the reasons for that are several. Slowly warmed the engine of the vehicle brings the driver the following issues:
- consumes more fuel
- harder wear
- gives a more “dirty” exhaust
- longer warming up of salon
The latter circumstance is most annoying for drivers as it relates to personal comfort.
What determines the speed of warming up?
To start, list the factors over which we have no control over in the moment.
- The engine displacement. Obviously, a big eight-cylinder engine even at idle generates a lot more heat than the engine of a subcompact. Think about it at the next change of the personal vehicle.
- The coefficient of performance (energy efficiency) of the engine. Diesels are slow to warm up because they are a much bigger part of the energy of burned fuel converted to useful work — particularly at idle rotate themselves and a bunch of auxiliary units. And a small part of the heat goes into the cooling system and is lost with the exhaust gases. Accordingly, to warm up a diesel at idle in the cold almost impossible. Almost all of the same applies to turbocharged gasoline engines with direct fuel injection. They are characterized by high efficiency, low fuel consumption, convenient characteristic of the torque and the slow warm up without load. But good old atmospheric engines, with not very good results in terms of fuel consumption, warm up fast enough. All the described processes is very well indicated by the onboard computer of the car, if it has time fuel consumption at idle. Now, simple atmospheric engines it is noticeably higher than the more modern units or diesel engines.
- Malfunction. If the thermostat hangs in the open position, the heat in the car do not wait. Also impairs the flow of heat a clogged cabin filter and covered with mud inside and out the heater core. For rapid warm-up all systems of the car must be roadworthy.
- The size of the cabin. It’s one thing to heat a few cubic meters of interior Lada Largus, and another to create a warm atmosphere in a pickup truck with a short cab and one row of seats. In the second case, heating of the interior will take significantly less time.
Keep in mind
Not all cars have regular and working correctly indicating the temperature of the engine. Most of these signs come to life only when coolant temperature is 40°C. There are cars that have the instrument cluster glows blue just a symbol — say, the engine is cold. And off only when the coolant temperature reaches 60°C. After this point the motor is already can be loaded, not afraid to hurt him.
How to speed up engine warm up and interior?
- The ambient air temperature and wind speed. It is obvious that these factors we can not influence. Although… if you know exactly what runs through your yard underground heating pipes (it is easy to calculate on melt the snow above it), then you can put the car right above it. Win a few moments during warm-up.
- The engine speed. Higher the rpm faster the heating. Here, oddly enough, the old carbureted engines had some advantage in the form of “leak”. Remember the little lever under the front panel, which has pulled itself immediately after starting the engine? The motors worked with covered the air choke is usually at a higher rpm than the modern fuel injected engine in warm-up mode. The driver of a modern car, you can just press the accelerator pedal to operate the engine in the range of 2000-2500 rpm.
- The load on the engine. The greater the load, the faster the heating. But it is important not to overload a cold motor, because the cold oil does not provide good lubrication, and thermal gaps far from optimal. We always recommend a short warm up at idle, and then slow movement for another few minutes at minimum load. A little will speed up the heating of the car with the CVT or the classic machine gun during Parking mode “D” gearbox.
- The heat transfer in the heater. On the rate of warming of the passenger compartment depends on the fact whether you use the heater. If the car engine is small displacement, the heater core blown ice cold air at max fan speed makes it very difficult to warm up the car. And air from the stove is cold and the engine is not warmed up. Better at low speed to slowly thaw out the windscreen. There is a machine with two heaters, where the heat sink more, but usually these vehicles are powerful enough and, therefore, rapidly warming the engine. Even on vehicles with modern, energy-efficient motors often put the electric air heater. This is the device deserves praise.
- The presence of additional heating systems. There are devices, without which it is almost not cost owners of diesel cars. This stand-alone heaters. Working on the fuel tank, and the only drawback — you can put battery. Not completely, of course — in this case provided protection, but to a certain extent. Such devices can purchase and install on your car.
- Do not allow the engine to cool down after the previous trip, i.e., do not turn off the engine completely. Method sometimes used in the far North. Well, the “Lite”version of this method used by many motorists even middle of the strip. It is a system of automatic engine start by temperature. Cooled motor — let a little work. And possibly several times during the night. Option — morning startup with the remote or timer.
Happy new year! I wish your car was as much heat as you want.
- Everything you need to know about warming up the car, you will find here.