「華人戴明學院」是戴明哲學的學習共同體 ,致力於淵博型智識系統的研究、推廣和運用。 The purpose of this blog is to advance the ideas and ideals of W. Edwards Deming.

2014年7月7日 星期一

G.M. Resists Recalling Trucks Over Brake Problem

G.M. Resists Recalling Trucks Over Brake Problem

Amid about 1,000 complaints and a years-long government investigation, General Motors has not recalled 1.8 million trucks with a brake line corrosion problem.


剎車線  brake line 腐蝕,表示卡車的工作環境很惡劣......


Some people think that by upgrading to stainless steel brake lines they will be able to increase their caliper clamping pressure or brake torque. The truth of the matter is that a stainless steel brake lines upgrade will only increase the brake fluid pressure vs volume relationship, and not the brake fluid pressure vs brake torque relationship.
By doing the upgrade, you will have effectively decreased the amount of time it takes to build up critical pressure in your brakes’ hydraulic system to activate your calipers at their maximum level. Pressure created in your hydraulic system will not be increased overall, it will simply take more brake pedal travel distance to effectively build that brake line pressure needed to fully activate your braking calipers. This results overall, in a more responsive brake pedal.
stainless steel brake lines Stainless Steel Brake Lines
If you are planning to upgrade your old or worn out brake lines anyway, then stainless steel brake lines upgrade might not be a bad idea if you are looking to decrease your stopping distance a bit more. Less pedal travel required to activate your brakes will decrease the amount of time for deceleration, and it may be worth it to you if you have already upgraded much of your other braking systems components.
If you do happen to perform the upgrade, you will need to monitor your braking performance regularly, as stainless brake line problems are not visible to the eye. This is due to the simple fact that the stainless steel braided mesh hides compromises to the Teflon brake line when present.

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