1. Smart variable valve timing and lift control system MIVEC
MIVEC (intelligent variable valve timing and lift control system), MIVEC precise mechanism is to issue an instruction through the ECU controls the intake cam axis phase: ECU in various driving conditions of the engine, corresponding to a search engine rotational speed, intake air timing, throttle position and coolant temperature optimum valve timing, camshaft timing and control the hydraulic control valve, and by signals of the respective sensors to sense the actual valve timing, and then performs feedback control, the error compensation system, to achieve optimum valve timing position, so that it can effectively improve the power and performance of the car, to reduce fuel consumption and exhaust emissions.
MIVEC Objective: MIVEC means is provided on SOHC four-valve engine of the two intake valves at low speeds the presence of the lift height difference, and the two high speed to increase the intake valve lift cam switching . mechanism at low engine speed operating conditions, relying on the difference between the two intake valves the lift of the cylinder to enhance the flow of the mixture gas, and due to more complete combustion to achieve lower emissions and reduce fuel consumption, increase the torque object; at high engine speeds when working conditions, by increasing the intake valve opening time and lift of the intake air amount of the engine increases due to higher power output.