mct 发表于 23-7-2014 01:49 PM 
dohc 才有vtc, 没有dohc的做不到vtc的
ivtec 就是vtec+vtc 把？
有了VTC才可以叫i-vtec
i-VTEC is the technology used in the latest family of Honda engines. The engines incorporate a host of innovative features designed to deliver a cutting-edge combination of performance, efficiency and low emissions. The technology combines VTC (variable Timing Control) - which continually adjusts camshaft timing - with Variable Valve Timing and Lift Electronic Control (VTEC), which changes valve lift, timing and duration. The result is impressive horsepower and high torque with outstanding fuel economy and low emissions. In addition, the new engines are rotated 180 degrees from the traditional Honda layout, bringing the exhaust manifold closer to the catalyst for improved operating temperature and reduced emissions at start-up. Honda has designed a multitude of engine variations dependant on engine requirements, for example a high-performance version of i-VTEC, which operates VTEC on both camshafts.
i-VTEC valve control system The 'intelligent' i-VTEC system adds new VTC (Variable Timing Control) to VTEC to provide continuously variable camshaft timing - taking the concept of variable valve timing to new heights. In short, VTEC + VTC. Not only does i-VTEC provide a substantial performance increase across a broad power band, it boosts fuel economy while also reducing exhaust emissions.
本帖最后由 jscyl1980 于 23-7-2014 01:59 PM 编辑
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发表于 23-7-2014 12:14 PM
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