Re: Packard fuel injection

Posted by Craig Hendrickson On 2011/1/15 12:56:12

Thanks for posting these Packard/Bosch FI engineering papers!

A couple of things that jump right out are:

1) Optimum BSFC curves are very difficult to obtain with the manual controls of the day. Obviously, computer control with sensor feedback solved this problem on modern engines.

2) According to the report #374 paper, Packard engineers installed a vertical divider on the siamesed center exhaust ports in order to minimize exhaust mixing between 3&5 and 4&6 exhaust ports. Hopefully, this would have lead to a recasting of the V-8 head in order to achieve true separation without the constriction of simply a vertical divider.

Craig