Sakor Technologies supplies valve spring test system to SAIC


Sakor Technologies has supplied a valve spring test system to SAIC Motor Corporation. This test stand will be used for valve train development and testing and is expected to facilitate improvements in fuel economy.

SAIC and its partners will use the new capabilities for driving engine cam systems to make precise laser measurements of valve displacement, spring displacement, and motion of other valve train components in the engine head as the cams are spinning. The test stand information will be used to improve valve spring design performance and durability.

It is equipped with a single AccuDyne AC dynamometer that drives both cam shafts simultaneously. The AccuDyne is a four-quadrant motoring dynamometer, fully capable of testing both active devices and passive devices that do not drive themselves, including cam shafts, pumps, clutches and compressors.

The valve spring testing unit will facilitate the review of different mechanical components, springs, valve seats, and components in the cam drive line, which opens and closes valves to cylinders letting fuel and exhaust in and out. In older engines, the timing of valve opening and closing was fixed, but newer designs are being developed to change the timing depending upon the engine speed and load.

An enhanced version of the Sakor test system can also simulate these different cam phasing methods.

December 2, 2015


About Author


John joined UKi Media & Events in 2012 and has worked across a range of B2B titles within the company's automotive, marine and entertainment divisions. Currently editor of Automotive Testing Technology International, Crash Test Technology International and Electric & Hybrid Marine Technology International, John co-ordinates the day-the-day operations of each magazine, from commissioning and writing to editing and signing-off, as well managing web content. Aside from the magazines, John also serves as co-chairman of the annual Electric & Hybrid Marine Awards and can be found sniffing out stories throughout the halls of several of UKI's industry-leading expo events.

Comments are closed.