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Kugelfischer Pump: History, Anatomy and Physiology PDF Print E-mail
Written by Bill Williams   
Saturday, 04 March 2006

A compliation of several FAQ forum posts
Tii and Kuglefischer trivia for the weekend and Kugelfischer parts

by Bill Williams

with a healthy contribution by c.d.iesel ,Timmer & 2761377
compiled by _z_ ..

Section 1: Kugelfischer History and Trivia
Section 2: Kugelfischer Anatomy and Physiology
Section 3: On Kugelfischer Pump Mixture
Section 4: Known Kugelfischer Pump Rebuilders


Kugelfisher History and Trivia

First Bill William asked Do you know what a Kugel is?

From: c.d.iesel in South West Connecticut - Darien = The Right Coast
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quoting c.d.iesel

...part 3 The Federal Trade Commission today announced a proposed consent order with INA-Holding Schaeffler KG (INA) and FAG Kugelfischer Georg Schafer AG (FAG) that will permit INA to complete its acquisition of FAG, while remedying the likely anticompetitive impact identified in the cartridge ball screw support bearing (CBSSB) market. Under the terms of the proposed order, INA and FAG would be required to divest FAG's CBSSB business to Aktiebolaget SKF (SKF) no later than 20 business days from the date on which INA begins its acquisition of FAG. In addition, INA and FAG would be required to provide prior notice to the Commission before entering into any joint venture activity related to North America with NTN Corporation of Japan (NTN), a large producer of bearings worldwide.

"This acquisition would have given INA a monopoly in the CBSSB market worldwide. The proposed order ensures that SKF will replace FAG as a competitor, maintaining the competition that existed before the acquisition to the benefit of customers," said Joseph J. Simons, Director of the FTC's Bureau of Competition.

The Parties and the Proposed Transaction

INA is a German corporation, with its headquarters in Herzogenaurach, Germany. INA is engaged in the research, development, manufacture, and sale of various types of ball and roller bearings. INA's principal subsidiary in the United States is located in Fort Mill, South Carolina.
FAG is also a German corporation, with its headquarters in Schweinfurt, Germany. FAG is also engaged in the research, development, manufacture, and sale of a variety of ball and roller bearings. FAG's principle subsidiary in the United States, Barden Corporation, is located in Danbury, Connecticut.
SKF is a Swedish corporation, with its headquarters in Goteborg, Sweden. SKF is the largest supplier of ball and roller bearings in the world.

...the end = a "KUGEL" is a ball bearing


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From: Timmer in Rochester, N.Y.
And what BMW was the first to have the Kugelfisher system? a little hint, it has 4 doors..ok, ok, the 4 door Neue Klasse 2000tii, produced for one year, 1971.

From: 2761377

excellent post! thank you- it answers some questions i've had for a awhile. mechanical fuel injection history is near to my heart for several reasons- obviously my tii but also world history was affected by this technology.

-daimler-benz used it as direct injection on the db601 which powered the messerscmitt bf-109E from 1939. this was a distinct advantage over allied fighters, which were carbureted. instant throttle response, even while in inverted flight. notice the blurb says the plo pump is usable in direct injection applications.

also, notice the bearing manufacturer FAG was based in schweinfurt, germany. in october, 1943 u.s. 8th air force attacked the ball bearing plants in schweinfurt/regensberg at great cost. on one raid, 60+ b-17s were lost out a force of @300- november and december 1943 were pretty quiet for the u.s. strategic bombing campaign. the schweinfurt raids changed the whole course of the air war; after that the allies concentrated on the oil industry, the lifeblood of modern warfare.

unless information for most, but it really fires my rockets! ;-) (Ours too! -- eds)

Anatomy and Physiology

Bill Williams gets to the meat of the Kugelfisher with Dave Redszuz
(a renown Kugelfisher expert. You can reach Dave at 630.766.1711)

Here is young Dave Redszuz in front of his parts sorter that has every part for the Kuglefischer

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Kugel is ball in German and in the case of the Kugelfischer, it is the ball socket that the tappet is inserted into and is captured in the plate that rides up and down on the control cam.

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Here is an example of the pumps he does

Daves test setup

Pardon me for not knowing all of the proper names. The picture below shows Dave inserting the plate that rides up and down on the control cam via tappets that determine how far the plungers/pistons travel inside the K-pump. You can also see the eleptical cam that moves the plate

Injector parts

Close up of the plate, the four holes toward the rear of the plate are the "Kugels" or ball sockets. Small tapets go through these Kugels from the bottom. The bottom of the tappets ride on the cam and top of the tappets push the plungers/pistons up and spring pull them down. The maximum travel of the plungers/pistons is 2.5mm.

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Close up of the eleptical cam

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Here is a picture of the cam that opens and closes the plungers/pistons. If you look closely you can see the high and low points on the lobes. The low spot after the first high point causes the suction valves to fill the plunger the second high point causes the plunger to rise and eject the fuel through the delivery valves. The intriquing part of this part is the magnet attached to the gear on the left. This magnet does some magic based on rotating speed, coupled with the resistance of the large spring it is attached to (not in picture) to control the position of the control cam. Whew, I am way above my head!

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The two parts below are from the warm up tranmitter. The part on the right is the collar that is on the top of the transmitter. The part on the left moves up and down within the collar, the threaded rod goes inside the part on the left. The significance of this part, is the three tapered slots. These slots allow the unmetered air into the motor on warm up. When the car is cold and the part is slid down in the collar, additional air is allowed for warm up and as you can see as it move up into the collar, that additional unmetered air is shut off. Often tii folks do not know where this additional air come from.

Kugelfischer Cam Closeup

Precision Automotive Research also tests and rebuilds injectors to Motorsports specs, those specs are more demanding than stock BMW specs, here is a pic of Dave holding two parts of the injectors, one is the valve you can see from the bottom of the injector and the other part is the retainer for that valve. The retainer is really neat in that the slot the valve moves through is cut in a "spiral" shape for the valve to move in.

Warm Up Transmitter Internals

Ok, now it is time for the experts to correct any of my mistatements. I am not an expert, but I am smarter now than before I spent time with Dave. Thanks Dave if you see this post.

Last picture, this is the set-up PAR uses to calibrate the pump ensuring all cylinders deliver the correct amount of fuel. They provide a detail sheet of the fuel delivery for each cylinder at P1, P2, P3 and P4 at varying RPMs.

Dave Redszuz makes a nice pump
bergie33 in Santa Cruz, CA -- his injectors !!!

On Kugelfisher Pump Mixture

Eric Asked
can someone post a pic of the as to the location of the mixture adjustment on the back of the kfisch pump. Jaymic says: To adjust the mixture over the complete speed range, adjust screw (allen screw 3mm with plastic cover) between the warm up unit and the eccentric shaft in the back of the injector pump. screw in- rich, screw out -ean

Gus, Pacific Fuel Injection, rebuilt the pump 1 year ago and said the same thing. seeing a pic will give me beter understanding of the procedure.

Eric is speaking of Gus Pfister of
Pacific Fuel Injection
Suite B, 153 Utah Av
South San Francisco, CA
Tel. (650) 588-8880
Read a Great Gus Interview and Story from bayarea02.com

BillWilliams
Eric, the top of the mixture screw is hidden in the pic
attached. The threaded screw in the pic is the bottom of the screw you asked about. What the pic shows is the space that is adjusted by the screw. The screw that is adjusted is just above what you see in the pic. The screw can be an allen screw or a slot head screw, both are secured by a 10mm jam nut and covered by a plastic cover.

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I don't mean to sound mean or demeaning, but if you do not know where the screw is, I would caution turning it. The Kugelfischer is a wonderful piece of engineering and should be understood befor adjusting the "forbotten" screw. Please take the time and understand the pump and the other adjustments first. Usually linkage adjustment and the adjustment in the tuna can or timing will take care of the mixture problems. If you insist on turning it, mark where you started with it and only turn in 1/16 increments. If you are attemptinging to make adjustments without readings from a CO meter, you are really operating in the dark area.

Kugelfischer data sheet


If Gus provided you a data sheet after he rebuilt the pump, it should look similar to this, Hope you can read it.

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Known Kugelfischer Rebuilders

Curt Ingraham says As of 4-5 years ago, these were the candidates:

Jerry Fairchild Industries
5242 Westside Road
Redding, CA
530 241-1592
Robert Fairchild
(was Pasadena and Corona, CA)

H & R Fuel Injection
1648 C Locust Avenue
Bohemia, NY 11716
516 589-1600
Hans Utke

Mashinter Research Center
414 9th Street
Rockford, IL 61108
815 226-3422
Bill Mashinter

Pacific Fuel Injection
153 Utah Avenue, #B
South San Francisco, CA
650 588-8880
Gus Pfister
(was: 1323 Rollins Road, Burlingame, CA 94010, 650 342-5536)

Precision Automotive Research
901 Hillside Drive
Bensenville, IL 60106
630 766-4402
David M. Redszus

Ingram Enterprises
206 S. Cloverdale D-5
Seattle, WA 98108
206 762-3631 voice
206 762-1820 fax
www.wesingram.com

 
 
Wes Ingram


thanks Bill and everyone for the contribution. Please let me know if anything is screwed up or needs updating.