10-11-2014, 10:50 PM
sir please provide me with every possible details about vvti engine ,
like its construction , working , advantages , disadvantages its comparison wih other engines
i really want it now
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vvti engine technology pdf
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sir please provide me with every possible details about vvti engine ,
like its construction , working , advantages , disadvantages its comparison wih other engines
i really want it now
10-11-2014, 11:28 PM
VTEC
VTEC (variable valve timing and electronic lift control) valve system is developed by Honda to improve the volumetric efficiency of an internal combustion engine four-stroke. This system uses two camshaft profile and electronically selects between profiles. It was invented by engineer Honda R D & Ikuo Kajitani, it can be said that VTEC, the original Honda variable valve control system, originated from REV (Revolution-modulated valve control) introduced on the CBR400 in 1983 known as HYPER VT EU
Camshaft uses rotating blades, which are pushing against the valve to open and close them. Because engines valves played an important role in how air enters the combustion chamber, it makes sense to focus on them when looking to increase horsepower and performance.
When you increase the speed, but this configuration for a camshaft doesn't work very well. If the engine operates at 4000 RPM valves open and close in 2000 times every minute. When the intake valve opens at the top of the intake stroke, it turns out that the piston has a lot of trouble getting air in the cylinder is moving in a long time. Thus, at higher RPM ranges you want to intake valve to open before taking the bar really is still in the exhaust stroke-so that by the time the piston starts to move down into the intake valve is open and the quantum air moves freely in the cylinder during the intake stroke. For maximum engine performance at low revs the engine valves must be opened and closed in a different way than they do at higher engine speeds. If you put low speed shaft, it harms engineâ "™ performance at high speeds, and if you put in a good high speed shaft, it harms engineâ" ™ performance at low speeds.
VTEC (which stands for variable valve timing and lift Electronic Control0 is electronic and mechanical system in some Honda engines that allows the engine to have multiple camshafts as the engine goes into a different RPM ranges PC engines can activate additional lobes on the camshaft and the change time ™ with Kama. Thus, the engine Gets the best features of low-speed and high-speed shafts in the same engine
MIVEC (Mitsubishi Innovative valve timing and electronic lift control), which is used on Mitsubishi engines.
VVT-I (variable valve timing with intelligence) and now the VVTL-I ((variable valve timing with intelligence and lift with intelligence), which is currently in use on the current Toyota and Lexus engines
VVL (height adjusting valve lift), which is used on engines Nissan, The camera VVL, the new system variable "Nissanâ ™ lift that looks identical to the Honda VTEC system. In fact, it looks exactly the same. But it turns out that the only significant difference between the VTEC and VVL is the fact that the VVL diversion intake and exhaust in several different engine speeds in an attempt to smooth the transfer between profiles cams.
VTEC (variable valve timing and electronic lift control) valve system is developed by Honda to improve the volumetric efficiency of an internal combustion engine four-stroke. This system uses two camshaft profile and electronically selects between profiles. It was invented by engineer Honda R D & Ikuo Kajitani, it can be said that VTEC, the original Honda variable valve control system, originated from REV (Revolution-modulated valve control) introduced on the CBR400 in 1983 known as HYPER VT EU
Camshaft uses rotating blades, which are pushing against the valve to open and close them. Because engines valves played an important role in how air enters the combustion chamber, it makes sense to focus on them when looking to increase horsepower and performance.
When you increase the speed, but this configuration for a camshaft doesn't work very well. If the engine operates at 4000 RPM valves open and close in 2000 times every minute. When the intake valve opens at the top of the intake stroke, it turns out that the piston has a lot of trouble getting air in the cylinder is moving in a long time. Thus, at higher RPM ranges you want to intake valve to open before taking the bar really is still in the exhaust stroke-so that by the time the piston starts to move down into the intake valve is open and the quantum air moves freely in the cylinder during the intake stroke. For maximum engine performance at low revs the engine valves must be opened and closed in a different way than they do at higher engine speeds. If you put low speed shaft, it harms engineâ "™ performance at high speeds, and if you put in a good high speed shaft, it harms engineâ" ™ performance at low speeds.
VTEC (which stands for variable valve timing and lift Electronic Control0 is electronic and mechanical system in some Honda engines that allows the engine to have multiple camshafts as the engine goes into a different RPM ranges PC engines can activate additional lobes on the camshaft and the change time ™ with Kama. Thus, the engine Gets the best features of low-speed and high-speed shafts in the same engine
MIVEC (Mitsubishi Innovative valve timing and electronic lift control), which is used on Mitsubishi engines.
VVT-I (variable valve timing with intelligence) and now the VVTL-I ((variable valve timing with intelligence and lift with intelligence), which is currently in use on the current Toyota and Lexus engines
VVL (height adjusting valve lift), which is used on engines Nissan, The camera VVL, the new system variable "Nissanâ ™ lift that looks identical to the Honda VTEC system. In fact, it looks exactly the same. But it turns out that the only significant difference between the VTEC and VVL is the fact that the VVL diversion intake and exhaust in several different engine speeds in an attempt to smooth the transfer between profiles cams.
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