Recently,
Beijing issued "Beijing 2013-2017 clean air action plan focused on the task
decomposition in 2015 measures", which explicitly states that before the end of
the year, new heavy duty diesel car full implementation of the fifth stage of
emission standards, non-compliance of the vehicle shall not be sales in Beijing
and registration. This is
in March 1, 2013, Beijing officially implemented motor vehicle emissions
standards after Beijing five, the first clear the specific implementation of the
standard of heavy diesel engine Beijing five emission standards. The news, immediately aroused great
concern from all walks of life.
Beijing
emissions and then upgrade to the environment
According
to relevant reports show that 2014, Beijing sulfur dioxide, nitrogen oxides
reduction for 10 years maximum, an average reduction of more than 7%, PM2.5
concentrations fell 4%. Among them, one (excellent) days reached 93 days, 22
days more than that in 2013, an increase of up to 31% and PM2.5 heavy pollution
days for 45 days, decrease 13 days than in 2013, a decline of 22
percent.
Through
the above data can be seen, after a series of environmental initiatives, Beijing
air pollution control initial success.
"In
recent years, we have clearly felt the government of Beijing to improve the
efforts of the atmosphere environment." Beijing Hongxin auto sales &
Service Co., Ltd., deputy general manager of Kincaid on the commercial
Automotive News "reporter said:" in our auto industry as an example, in order to
effectively control the automobile exhaust emission repeatedly upgrade in
advance emission regulations, higher emissions standard implementation provides
a strong support for the governance of air pollution in Beijing. "
As
the dealer said, the results achieved in the Beijing air pollution control is
part of the high standards of emissions before the implementation of the high
standards of domestic emissions regulations. Today, in order to have a better
control of the atmosphere in the next stage, to the public will be able to see
more blue sky, Beijing will before the end of this year formally implemented the
fifth stage of the heavy-duty diesel vehicle emission standards is often said
that the "Beijing five" emission standards, once again walk in the forefront of
the country.
"Beijing
ahead of other regions to implement the fifth stage emission regulations in
heavy-duty diesel vehicles, basic to be expected, because in recent years the
area emissions regulations for the implementation of the specific time can be
seen, Beijing always walk in the forefront of the country, which with Beijing as
the political center of the country, need to play a leading role are not
unrelated. Of course, the
environment pollution is serious, the situation is forced to enter the fifth
phase of the first heavy diesel vehicles in Beijing emissions regulations one of
the main reasons. Guangxi
Yuchai machine Limited by Share Ltd deputy general manager Zhong Yuwei told
reporters.
And
Yu Wei Zhong to the same ideas and State Key Laboratory of vice director Yao
Chunde of engines of Tianjin University, he pointed out that, Beijing took the
lead in the implementation of heavy-duty diesel vehicles on the fifth stage
emission regulation significance is greater than the actual
effect.
"The
air pollution serious threat to the health of the health of the people in
Beijing and the surrounding people, the implementation of the fifth phase of
heavy diesel vehicles can improve the atmospheric environment
earlier. In addition,
Beijing, after all, is the capital. Need to take the lead, set an example, for
the future nationwide implementation of the emission regulations in five
directions, ahead of the implementation of the fifth stage of heavy-duty diesel
vehicle emission standards in the reason. " Yao Chunde said.
Beijing
five R & D difficulty
And
January 1, 2011 already in Beijing implementation of heavy-duty diesel vehicles
in China IV emission regulations differ, the heavy-duty diesel vehicles in
Beijing five emission standard provides for the first time limit values for
emissions of particulate matter (PM), the standard to higher ahead of the
forthcoming in the implementation of the five national emission
standards.
On
the technical route, Beijing five and the country five also exist
differences.
Yu
Wei Zhong said: "Beijing implementation of the heavy-duty diesel vehicles
Beijing V emission standard and the five emission standards exist certain
differences, Beijing five engine need to install DPF in the country five engine
based on is diesel particulate trap is able to meet the emission
requirements. Yuchai's
five engine already in Beijing put into use, according to the Beijing V emission
regulations, we have to secondary research and development on the country's
existing five products, at present, related products have been sent to Beijing
declared. "
It is
understood, heavy-duty diesel engine's emission standards in five still uses SCR
route, only on the basis of original National IV emission, adjust SCR
calibration, five national emission can be realized, and the Beijing five engine
must install DPF, in order to achieve the stringent emission
requirements.
As
the key of the five engine, DPF is composed of PM acquisition device, fuel
injection device and control system.. When the DPF in the adsorbed particles
reaches a certain limit, the ECU will open to DPF fuel injection of the fuel
injection system, the DPF to capture particles full combustion complete
regeneration, which can effectively purify the exhaust in 70% ~ 90% of the
particles is one of the most effective and direct diesel engine particulate
purifiers the method.
In an
interview with Yu Wei Zhong said that after the introduction of the Beijing five
regulations, enterprises and the Beijing environmental protection departments
were full communication, in a clear understanding of the launch of demand and
certification process eventually determine the technical route.
"In
Beijing five engine in the process of research and development, the DPF
calibration difficulty is very big to the. To this end, we invite relevant
institutions to Germany and the United States joint research and development,
now, to meet the Beijing V emission standards for products have been
successfully developed, the relevant application materials have been sent to
Beijing for approval, but completion of the examination and approval, production
will not exist any problem." Zhong Yuwei said.
Yao
Chunde also said that for heavy duty diesel engine production enterprises,
Beijing five products R & D has a certain degree of difficulty, but the
overall impact is not great, after all, Beijing heavy duty diesel machine market
scale Co., and future nationwide in
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