2022年6月14日 · SOHC VTEC is currently the most popular SOHC design. The Ford Modular engines, which power the Mercury Grand Marquis and the Ford Mustang, are the technology champions, with 2 and 3-valve versions. Ford had previously produced a limited number of set single overhead cam 427 V8 engines with pushrod …

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.

DOHC with 4 valves x cyl. The Honda D-series inline-four cylinder engine is used in a variety of compact models, most commonly the Honda Civic, CRX, Logo, Stream, and first-generation Integra. Engine displacement ranges between 1.2 and 1.7 liters. The D series engine is either SOHC or DOHC, and might include VTEC variable valve lift.

2024年5月16日 · Below 2,500 rpm, VTEC-E operates the 16-valve 1.5-liter SOHC engine (D15B5) in a 12-valve mode, with one intake valve remaining mostly closed. This single intake-valve operation enhances swirl inside the combustion chamber, creating a stratified charge that concentrates the more fuel-rich part of the mixture near the spark plug for better fuel ...

Honda's new Integra, equipped with the DOHC/VTEC engine, was introduced to the market in April 1989. The VTEC technology drew considerable praise as the world's first valve mechanism capable of simultaneously changing the valve timing and lift on the intake and exhaust sides.

在本田r系sohc四缸机中，采用完全不同类型的i-vtec：没有凸轮相位器，因此无法实现连续可变气门正时，并且也没有闭缸技术。 这版i-VTEC的操控逻辑与传统的VTEC迥异，甚至可以说是背道而驰的，它的操作有点像上文提到的地球梦DOHC i-VTEC引擎，只是用了SOHC的形式。

这台是3段式VTEC技术的首装车，1995年的Civic Ferio Vi（EK3），它将SOHC VTEC及VTEC-E技术融为一体后，解决了VTEC-E动力性能不足的问题，其最大马力有130匹/7000转、最大扭力14.2公斤米/5300转。

2024年11月14日 · The 2001 Acura MDX featured a 3.5-liter SOHC VTEC® V6 engine (J35A3) that produced 240 hp and 242 lb.-ft. of torque. With the 3.5-liter engine, the MDX was able to establish new performance benchmarks in the SUV category for versatility, responsibility and dynamic performance.

2020年3月25日 · VTEC这四个字母倒不是本田工程师一时兴起想的名字，V代表可变、T代表气门正时、E代表电控升程、C代表控制，也就说VTEC是可变气门正时和升程的统称。 做气门正时和升程技术的目的很简单，降低油耗提高动力， 进一步讲是优化发动机进气和燃烧，假设气门升程不可变，那么气门打开大小就完全由凸轮形状决定，然而不同负荷下，发动机对进气的要求不一样。 发动机和人的呼吸一样，要吸入更多空气首先得呼出足够的废气。 进排气气门打开高度越高， …

2019年2月4日 · 在本田r系sohc四缸机中，采用完全不同类型的i-vtec：没有凸轮相位器，因此无法实现连续可变气门正时，并且也没有闭缸技术。 这版i-VTEC的操控逻辑与传统的VTEC迥异，甚至可以说是背道而驰的，它的操作有点像上文提到的地球梦DOHC i-VTEC引擎，只是用了SOHC的形 …