Volvo Introduces Start-Stop System in Automatic Transmission
One of the characteristics of the automatic transmission, fuel consumption is more wasteful than the manual transmission. On the other hand, manufacturers are also not easy to install one of the trends of technology used today to save fuel is, the start-stop. The reason, the automatic transmission, torque converter must continue to operate while the vehicle is stationary so easy to administer.
On the other hand, technology start-stop, must turn off engines to save fuel. Conditions like this will certainly cause problems in the transmission of power from the engine transfer duty to the wheels.
Such conditions, when the driver stepped on the gas pedal when it went on, certainly not straight road car. Because the machine must be lived then, to operate the torque converter and transmission. Hassle!
Therefore, installation of the start-stop system on the automatic transmission is rated by the manufacturer’s reputation. For example, as did Volvo start-stop system installed on a D3 turbo diesel engine, 5-cylinder, 2.0 liter. It is said that if the system is installed on the machine, fuel consumption is equivalent to 1.6-liter engine.
Starting in early September next week, Volvo Cars of the special handling of passenger vehicles would put the start-stop technology in the automatic transmission 6-perepatan on model S60, V60, V70 and S80.
“Installing technology start / stop the automatic transmission of the challenge is greater than the manual transmission. Volvo has introduced a start-stop system on manual transmission. The technique made Volvo engine to life when the driver must move the right foot from the brake pedal to the accelerator, “said Peter Mertens, Senior Vice President of Research and Development, Volvo Cars.
He added that with the technique Volvo, Volvo performance automatic transmission coupled with start-stop system, the same as the conventional version. “The car was immediately accelerate when the engine of life,” he added.
To turn off the engine and turn on automatically, Volvo uses brake pressure measurement. The system is programmed directly off the engine when the car stopped (0 km / h). Next use an electric pump to maintain pressure on the transmission fluid when the engine off (temporarily).
Start-stop system used on the Volvo D3 2.0-liter engine which is produces 163 PS and 400Nm of torque at S60. 5-cylinder engine principle is the same with 2.4 liter diesel engine, but its volume by shortening steps. The point is to optimize the fuel consumption.
Other combinations, Volvo adopted a piezoelectric injector to produce an accurate pulse injection through a high pressure. Furthermore, if the car is driven uu … tasty, turbocharger is set to generate torque from low speed to high speed.