Involvement from Bosch stop areas: 0.7 seconds value

For this international auto parts giant Bosch , its every year there are some big moves in the Chinese auto market , investment and production start-stop system, Bosch is not new. Over the years, the tireless efforts of the Bosch start-stop system worth it?

Bosch " Literacy "

For China's auto market , the start-stop system or a new technology , but in the global market , the technology in the early seventies already on the market. In 1994 , Bosch began formally involved in the field of starts and stops , and the Volkswagen Golf "small scale chopper ." Then Bosch increasing efforts to promote the Mercedes-Benz, BMW, Audi and Volkswagen, Toyota and other vehicles to keep trying , and gradually achieve mass production .

" Starting and stopping the system from stopping the automatic control of the engine, so we cried out to stop the system when starting the vehicle meets the conditions defined , the engine will automatically stop ; When the vehicle needs to start again , start-stop system automatically recognizes the drive command staff , and instantly start the engine , this moment is 0.4 seconds . its function is to effect a corresponding reduction in fuel consumption between the stop and the carbon dioxide emissions, which is also its contribution . " Almost every campaign year , Bosch starter and generator division president of China Sun Guozhong are asked to stop the system from the functional definition , and its always patiently for the questioner a " literacy ."

When circumstances occur in automobile engine starting cold state and hot cars have different states . In the cold state , it 's starting torque is relatively large. The viscosity of engine lubricating fluid is cold state greater , more difficult to start. But in a hot car state, it will start the friction torque becomes smaller . Hot car starter , then the above energy consumption is also different with the cold start .

Value and security

According to Bosch test results in NEDC New European Driving Cycle City tests show that using the start-stop system state, the fuel rate of the vehicle can save about 8 percent , and a corresponding reduction in carbon dioxide emissions. In the actual city traffic , this is likely to be even higher fuel savings , is expected to be twice as high than the test results in Europe.

"After the start-stop system calibration every time the ignition of the fuel consumption of 0.7 seconds with the idling fuel consumption is basically flat , so to say this is why we assume that , in the strict sense, it is worth 0.7 seconds to go down , the basic the idling one second , it is worth going down to save fuel. Bosch start-stop system through our many years of testing , basically we start and stop time , as long as more than 0.7 seconds , it is worth stopping once played " whenever starting when the value of energy-saving stop system has been questioned , Sun Guozhong no longer about the advantages of the Bosch start-stop system , but figures to come up with an objective response to questions.

About the impact from the life of the vehicle stop system , according to Sun Guozhong introduced , in terms of reliability , the entire system to start and stop the basic aspects of life of the vehicle no damage but will have some positive impact. For example, through a variety of tests related components , all designed to make more durable, frequently starting in better performance . Bosch currently more than 10 million sets of production start-stop system, not an example of a start-stop system due to the installation of engine damage occurs.

"We must have a start and stop the starter , the starter is basically common requirements are not met . Times we are now starting higher, the highest number of starts and stops has reached 40 million times , used in the latest generation of products , glide version of the start-stop system above, " Sun Guozhong stressed .

Roots in Chinese market

After wading through " blind " , Bosch China to stop the system from the road to promote the spread slowly .

Bosch will set sales, engineering, production, and matching platform developed in one of the starter generator in China , headquartered in Changsha, capital of Hunan Province , while duties and任博世leader in the global commercial vehicle starter plants .

Bosch in China have their own R & D center , you can develop applications more intently , to match these start-stop system . In China, such as R & D center in Changsha and joint automotive electronics R & D center in Shanghai , can be localized to the host user- provided technical services . Start- stop system fitted with better performance parts, such as AGM enhance sexual battery, which is better than ordinary batteries in low temperature performance. Its life becomes more than three times longer battery capacity is common .

"We are now the headquarters of this R & D center is located in Changsha , with more than 130 R & D personnel . These researchers is not only responsible for system calibration to match , but also shoulder the responsibility to develop a global platform . Currently we cover all the R & D center from the generator works and project management in Changsha, we have about 30 kinds of products testing capabilities , " Sun Guozhong Road.

After a joint venture with FAW , Bosch joint venture plant in Changchun also gradually on the right track at the end of October 2012 and achieved mass production. Meanwhile, Bosch has a satellite plant in Weifang, Shandong , and the plant now has a prototype. "We plan to mass production in 2014 and this is actually one of the final assembly testing facility closer to our commercial customers , near Weichai ," Sun Guozhong said.