Variable
Valve Timing (VVT) process is used in internal combustion engines to vary
the valve timings. It is the next step forward in appropriate utilization of an
engine, post development of the multi-valve technology. VVT aides in improving
performance of the engine and also reduces emissions, apart from decreasing
fuel consumption. Thus, it helps in increasing the power and torque also. VVT process
varies the timing of opening and closing of the inlet valve and exhaust valve
of an engine.
Overlapping of the two events, namely opening the inlet valve and
closing of the exhaust valve is optimized by the VVT process which leads to the
difference in power generated by the engine. At faster speed, VVT ensures
maximum overlapping while at moderate or slow speed it tunes the overlapping of
opening the inlet valve and closing of the exhaust valve as per the
requirement. VVT aides in reducing fuel consumption by optimizing exhaust gas
recirculation (EGR). VVT can ensure that some of the exhaust gas is
re-circulated in the engine by delaying the opening of the exhaust valve while
the fuel-air mix inlet valve is kept open. Thus the recirculation leads to less
consumption of the fuel-air mixture which ultimately leads to lesser
consumption of fuel.
The
global market demand for VVT is constantly increasing primarily due to the
increasing demand for fuel economy of engines, combined with power and torque.
Various regulations related to emissions have also been positively impacting
the demand for better VVT technology since it plays a crucial role in reducing
emissions. Various law enforcements are requiring auto makers to ensure that
the lowest possible emissions are created from their engines, thus leading to
advancements in the VVT technology.
Additionally, the global increment in
automobile sales has also been boosting the growth of the VVT market. However,
competing technologies such as start-stop system can pose threat to the VVT
technology. Also, difficulty in fault recognition of VVT and high cost of
replacement has been hindering the growth of this market. Additionally,
after-market supply of VVT systems is still quite limited. Several automobile
manufacturers are engaging in serious research and development to fully
computerize the process for varying the valve timing infinite times and also
for better engine output. Also, position and angles of cam shaft are being
experimented with regularly for bettering the system.
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By technology, the global VVT
market can be segmented into cam-changing VVT, cam-phasing VVT, cam
changing & cam phasing VVT and others. The market can be segmented by fuel
type into diesel VVT system and gasoline VVT system. Furthermore, VVT market
can be geographically segmented into North America, Europe, Asia-Pacific (APAC)
and rest of the world (ROW).
Some
of the key companies leading the VVT market are Aisin Seiki Co. Ltd. (Japan),
Continental AG (Germany), Denso Corporation (Japan), Hilite International, Inc.
(U.S.), Hitachi Automotive Systems (Japan.), Johnson Controls, Inc. (U.S.),
Mitsubishi Electric Corporation (Japan), Robert Bosch GmbH (Germany),
Schaeffler AG (Germany) and Valeo SA (France) among others.
The
report has been compiled through extensive primary research (through
interviews, surveys, and observations of seasoned analysts) and secondary
research (which entails reputable paid sources, trade journals, and industry
body databases). The report also features a complete qualitative and
quantitative assessment by analyzing data gathered from industry analysts and
market participants across key points in the industry’s value chain.
A
separate analysis of prevailing trends in the parent market, macro- and
micro-economic indicators, and regulations and mandates is included under the
purview of the study. By doing so, the report projects the attractiveness of
each major segment over the forecast period
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