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, apart from decreasing fuel consumption.
Thus, it helps in increasing the power and torque also. VVT process
emissions 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.
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).
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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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