5 days ago · The Mitsubishi 4B11 engine has an aluminum block and cylinder head, pentroof type combustion chamber, dual overhead camshaft (DOHC), four-valve designs with valve timing electronic control system (MIVEC) on both camshafts, electronic spark-advance control type ignition system, and electronic control multi-point fuel injection system.

Like non-turbo 4B11, the 4B11T uses MIVEC continuous variable valve timing on both the intake and exhaust camshafts. The diameter of the intake valves is 35.0 mm; the diameter of the exhaust valves is 29.0 mm; the valve stem diameter of both valves is 5.5 mm.

Oct 22, 2008 · Even though the Evo Ix 4G63 was equipped with the variable valve timing on the intake side only, the 4B11 proves to have added improvements on low to midrange torque. The MIVEC is controlled with an ordinary vein that partitions two different chambers managed with two different pressures.

Dec 26, 2024 · One of the defining characteristics of the 4B11 is its use of MIVEC (Mitsubishi Innovative Valve timing Electronic Control), which optimizes the engine’s efficiency and power output across various RPM ranges.

The 4B1 engine family is the first to have the continuously variable valve timing MIVEC system applied not only to its intake valves but also to its exhaust valves. The intake and exhaust cam timing is continuously independently controlled and …

4B11 MIVEC engine. MIVEC (Mitsubishi Innovative Valve timing Electronic Control system) [1] is the brand name of a variable valve timing (VVT) engine technology developed by Mitsubishi Motors. MIVEC, as with other similar systems, varies the timing of the intake and exhaust camshafts which increases the power and torque output over a broad ...

Jun 17, 2010 · MIVEC: Typically, to achieve a fast spool up advance the intake cam and retard the exhaust cam during spool up. For example +35 intake and -10 retard during spool up. The amount you can advance and retard depends on TURBO …

Feb 24, 2024 · The 4B11 engine incorporates Mitsubishi’s MIVEC (Mitsubishi Innovative Valve timing Electronic Control) technology. This advanced system optimizes valve timing for both intake and exhaust, resulting in improved power delivery and fuel economy.

Oct 12, 2024 · The process usually involves testing combinations of ignition timing and cam phasing, as well as lambda target to a lesser extent. Ignition timing gets involved because altering cam phasing can alter peak cylinder pressure as well as the shape of the trace, cylinder temperature, and require more or less ignition advance to achieve best torque.

The engine utilizes 16-valve (4 valves per cylinder) head with chain-driven camshafts. Like non-turbo 4B11, the 4B11T utilizes MIVEC constant variable valve timing on both the consumption and exhaust camshafts.