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A Honda K24A Engine with i-VTEC. VTEC (described as Variable Valve Timing & Lift Electronic Control, but stands for Valve Timing Electronically Controlled) is a system developed by Honda to improve the volumetric efficiency of a four-stroke internal combustion engine, resulting in higher performance at high RPM, and lower fuel consumption at low RPM.
In Honda's 2006 Civic Hybrid, the 1.3-liter i-VTEC engine uses a 3-stage valve design, an advancement from the 2005 i-VTEC technology. Aside from weight and friction reduction, the engine operates on either low-speed timing, high-output timing or 4-cylinder idling when the VCM system is engaged, each yielding better engine output upon varying ...
Honda K24A4 2.4L DOHC i-VTEC Engine installed in 2003 Honda Accord. The Honda K-series engine is a line of four-cylinder four-stroke car engines introduced in 2001. The K-series engines are equipped with DOHC valvetrains and use roller rockers on the cylinder head to reduce friction.
It is fuel injected, has an aluminum-alloy cylinder block and cylinder head, is a SOHC 16-valve design (four valves per cylinder) and utilizes Honda's i-VTEC system. The R series engine has a compression ratio of 10.5:1, features a " drive by wire " throttle system which is computer controlled to reduce pumping losses and create a smooth torque ...
Variable Cylinder Management (VCM) is Honda's term for its variable displacement technology, which saves fuel by using the i-VTEC system to disable one bank of cylinders during specific driving conditions—for example, highway driving. The second version of VCM (VCM-2) took this a step further, allowing the engine to go from 6 cylinders, down ...
91–96 H22A Prelude Si VTEC (Japan) 94–97 H22A Accord SiR (Japan) 97–01 H22A Prelude SiR, SiR S-spec, Type S (Japan) 00–02 H22A Accord Euro R (Europe) 93–96 H22A1 Prelude VTEC (America) 93–96 H20A4 Modified Prelude VTEC (America) 97–98 H22A1 Prelude VTiR (Australia) 93–96 H22A2 Prelude 2.2i VTEC (Europe) 1996 H22A3 Prelude VTEC (KU)
The J30A4 pushed output to 242 hp (180 kW) and 212 lb⋅ft (287 N⋅m) using a three-way VTEC system, a higher (10.0:1) compression ratio and a novel exhaust manifold cast as one piece with the cylinder head. It weighs nearly 20 lb (9.1 kg) less and is an inch shorter than J30A1.
In May 2004, alongside the introduction of a 2.0L i-VTEC variant, a 1.7-liter VTEC variant unofficially replaced the 1.7-liter VTi-S variant. [19] Two limited-edition seventh-generation Honda Civics were produced; once in April 2003 with 60 units known as the Civic RX [20] and in January 2005 with 150 units known as the Civic RX2. [21]