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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.
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 ...
Three-stage VTEC is a multi-stage implementation of Honda's VTEC and VTEC-E (colloquially known as dual VTEC) technology, implemented in some of the company's D series engines from 1995 to the present day, allowing the engine to achieve both fuel efficiency and power. VTEC-E (for "Efficiency") is a form of VTEC that closes off one intake valve ...
Honda wasn't the first or last to do variable valve timing and lift, but no one did it with such style.
In Canada and the USA, the Civic Type R is only offered with 306 hp (228 kW) turbocharged 2.0 liter i-VTEC 4-cylinder engine. The Type R has amenities including a 12-speaker sound system with Sirius XM radio with a 7-inch touchscreen which allows gesture controls but no auxiliary input. [56] Minor changes were made in 2019.
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.
The DX was powered by a 1.2-liter SOHC engine just like the hatchback, the LX with a 1.5-liter SOHC engine (PH15) [citation needed] and power steering, and the ESi with a 1.6-liter EFI SOHC engine (PH16) and all power amenities. All trims were equipped with 5-speed manual transmissions while the ESi came with 4-speed automatic transmission.
In 1989, Honda released the VTEC system. [13] While the earlier Nissan NVCS alters the phasing of the camshaft, VTEC switches to a separate cam profile at high engine speeds to improve peak power. The first VTEC engine Honda produced was the B16A which was installed in the Integra, CRX, and Civic hatchback available in Japan and Europe ...