GotEngines.com Auto Repair Blog » engine theory

Engine Theory: Cylinder Deactivation

Danny Lehrman — Sat, 29 Aug 2009 14:40:18 +0000

Also called multiple displacement, displacement on demand (DOD), and variable cylinder management, in reference to automotive engines. Cylinder Displacement technology merely deactivate some of the engine’s cylinders when they are not needed. This temporarily turns a 8- or 6-cylinder engine into a 4- or 3-cylinder engine. This technology is not used on 4-cylinder engines since it [...]

What is a Single Overhead Cam Engine (SOHC)??

Danny Lehrman — Thu, 28 May 2009 20:06:14 +0000

SOHC engine

[/caption] Highly efficient in design, a single overhead cam(SOHC) engine potentially generates a higher engine speed permitting greater revolution per minute(RPM) than compared to older style pushrod-driven overhead valve (OHV) powerplants. Gaining attention like they were invented recently, today as advanced, single overhead cam engines were successfully used in racing back [...]

What types of oil systems do automotive engines use?

Danny Lehrman — Mon, 25 May 2009 18:10:16 +0000

Lets talk about how automotive or truck engine oil systems work. GotEngines.comÂ will discussÂ with 2 of the 3 systems today. 1. Wet sump- splash system. Not used in cars for more years than I can remember. They have not used a splash system in lawn mowers fro 15 or 20 years. It served it’s purpose at the [...]