All-round Athlete

Chapter 624: Departure

Kinetic energy recovery system, the English name is abbreviated as KERS.

The main function of this system is to store the braking energy of the body and release it as auxiliary power during acceleration. When used in Formula One racing cars, this system actually converts the energy of the braking step of the car into electrical energy and stores it in the battery. It can be used after the energy storage is full, and it can provide extra power for the car in about 6.5 seconds. about 80 horsepower.

This figure is quite sloppy for ordinary people. To give a more specific example, the car will definitely accelerate at full speed when it reaches the straight road. We assume that the maximum speed of the car on the straight road may reach 300 kilometers per hour, and with this extra With 80 horses of power, the top speed can reach 320 kilometers per hour, which is an increase of 20 kilometers.

Of course, the speed of 20 kilometers can only be reflected in the top tail speed. After all, the extra 80 horsepower is only 6.5 seconds, and the acceleration also needs a time process.

In a Formula One race, this system can only be used on the straights within a lap, but under certain conditions, the 80 horsepower is very useful. For example, when overtaking on a straight line, the extra 80 horsepower can play a decisive role; for example, when starting the race, the extra 80 horsepower can give the car an advantage of about ten meters.

The 2009 season is hailed as the season with the biggest change in Formula One rules in recent years. In this season, slick tires were re-enabled, the height and width of the rear wing were redefined, mid-season tests were canceled, and wind tunnel tests were limited. At the same time, the kinetic energy recovery system was also activated.

It's just that at present, this technology is still immature for Formula One racing. Even a manufacturer team that can produce its own engine is still in the experimental stage. After all, a racing engine is a precision machine, and everything from design to experimentation to production is under strict control. Suddenly adding a kinetic energy recovery system device is definitely not the case. You can add it if you say it.

So far, although Ferrari and other manufacturer teams have come up with kinetic energy recovery systems, they are not final products. This system is still very unstable, and independent teams do not have the ability to produce their own racing engines. Much slower. Even Newey, the design master of Red Bull Racing, publicly expressed his reluctance to use the kinetic energy recovery system.

The entire weight of the kinetic energy recovery system device must reach 50 kilograms, especially the battery that stores energy is very heavy. The weight of a Formula 1 car plus the driver is about 610 kilograms. A sudden increase of 50 kilograms is equivalent to an increase of one-twelfth of the weight, which will affect the lap time by at least 0.3 seconds. In the future, with the advancement of material technology, the weight of kinetic energy recovery system components will be reduced to less than 30 kilograms, which will gradually be accepted by the team.

Of course, the above is only a theoretical description. In fact, the materials of Formula One racing cars are very light, and even the chassis is made of carbon fiber. Therefore, in the maintenance area, it is often seen that a person can carry a front or rear wing of a racing car and run away.

F1 rules require that the weight of the car and the driver must reach more than 600 kilograms. With modern material technology, all cars cannot reach this weight, so the car needs to add a certain amount of weight to counterweight, and the kinetic energy recovery system It happens to be able to offset some of the counterweight, so the impact of installing a kinetic energy recovery system on the speed of the car is not as great as it is theoretically.

The main reason why the team is unwilling to use the kinetic energy recovery system is not the weight. In addition to the immature technology, the main reason is that it will change the aerodynamic layout of the car. Although the kinetic energy recovery system components are installed inside the racing car, it has no effect on the appearance of the racing car, but it affects the weight system of the entire racing car. This means that the data needs to be recalculated, the wind tunnel test re-conducted, and the racing car re-tested. But in the new season, the mid-season test was canceled and the wind tunnel test was limited, so for the team, I would rather not use the kinetic energy recovery system, the extra 80 horsepower, and not change the aerodynamic layout of the car.

...

On March 29, the first race of the 2009 Formula One Championship kicked off at Albert Park Circuit.

Before the race started, the defending champion of last year's Formula One was penalized for replacing the gearbox and started from 18th on the grid. The Toyota car, which had an eye-catching performance in qualifying, was also penalized for using a variable rear wing. They had to re-adjust the parts of the car and then start from the pit stop. The pit stop has a limited speed, and the pit stop must start slower than the track start, which means that they will start in the last two.

As the car was pushed onto the track, journalists swarmed in. They would not miss this last chance to have a close contact with the car before the race.

Teams are more concerned about what tires the opponents are using, and they can use different tires to judge what strategy the opponent will use.

The heat shields of the tires were removed from the two Ferrari cars, and the green line on the tires indicated that Ferrari was using softer tires.

"Ferrari is using supersoft tires, and they are really going to start the car." Ross Brown's voice sounded in the earphones, he paused, and then said: "The current track temperature is 31 degrees Celsius and the air temperature is 21 degrees Celsius. The weather is fine, and it seems that it will not rain today. This temperature is very suitable for the performance of medium tires, but the supersoft tires will last for a few more laps. I saw that the safety car has come out of the maintenance area, and the warm-up lap It's about to start, good luck..."

The safety car comes out of the pit lane and will lead all the cars through a warm-up lap.

After the tire warm-up lap, all the cars returned to the starting point, and the red lights hanging in front also turned on at this time.

This is the signal to start the car. There are five red lights in total, which will be turned on one by one. When all five red lights go out, the race will start.

"This is Zhang Guan's first race start. Will he nervously step on the gas pedal? Then he will be overtaken by other cars! Maybe he will crash in the start and quit the race directly?" The name " Expressing personal opinions" the reporter kept cursing Zhang Guan in his heart.

The auditorium has become quiet, and all the people concentrate on the track, waiting for the moment of departure.

Finally, all five red lights went out, the roar of the engine resounded, and a plume of smoke appeared behind many racing cars. This is a sign of incomplete combustion of gasoline, which is very common at the start.

"Zhang Guan! The start was very smooth! No mistakes! Hold the first place!"

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