2007-01-14 07:11:31 · 7 answers · asked by walter w 1 in Cars & Transportation ➔ Maintenance & Repairs
who's engine?, there are many types of governors on diesel engines ( constant speed, road speed, automotive, load sharing, pto , cruise control,and electrical ) they are located in a injection pump, fuel pump, some are a just a calibration in the ecm, and others mounted in-line or remote mount too. their job is to control fueling between idle (including idle) to maximum rpm's desirable, or to maintain a preset rpm. the governor also maintains Idle speed, speed droop, throttle surge, and in some cases shut down. Everyone thinks the the governor just limits top speed of the engine--it does more. Anyone who has ever bogged down a diesel in gear without touching the throttle has learned this. the governor will try to increase fueling in order to maintain idle speed.
now if your talking about a speed governor to limit max road speed that is totally different.
When dealing with non-computerized engines--the fuel pump has no idea what transmission gear you are in--or how fast you are going so all the one in the fuel pump can control is engine speed . An external governor is installed off the transmission tail shaft by sensor or cable that will limit throttle movement in the case if of road speed is to be limited . each manufacture can do this in many ways.
2007-01-14 07:34:50 · answer #1 · answered by redrepair 5 · 1⤊ 0⤋
The governor restricts the maximum revolutions that the engine can make to prevent damage during use.
The manufacturer of the engine sets the governed speed to prevent this damage and the governor should not be tampered with in any situation.
It is normally found in the fuel injection pump,and consists of a set of weights that move in and out as the engine revs rise and fall.These weights then operate on a valve which increases or decreases the available amount of fuel to the injectors.
A diesel engine without a governor,or a seized governor has no other way of restricting the fuel flow to the injectors,so will rev itself to certain destruction.
2007-01-14 15:21:15 · answer #2 · answered by Matt 2 · 2⤊ 1⤋
The governor on a diesel restricts the revs on the engine either by goverment decree , which means it iS illegal to remove it (fines are exeedingly heavy) that comes in with the commercial speed limit . Or to protect the engine from damagingly excesive revs . most cars do not have a governer but have a restrictor on the diesel pump , which is not illegal to ajust . BUT ON YOUR HEAD BE IT
2007-01-15 05:57:49 · answer #3 · answered by ? 7 · 0⤊ 0⤋
the governer is on the diesel pump and it stops the engine from revving to high
if you dont know what it is and what it does the leave it alone as you could blow up your engine as without this on a diesel pump the engine would keep revving until it blew up
2007-01-14 17:31:07 · answer #4 · answered by andrewmntl 1 · 0⤊ 0⤋
the governor is part of the fuel pump and should not be tampered with, its there not only to restrict the top speed but also to control pump functions at various demand situations.
2007-01-14 15:24:33 · answer #5 · answered by Anonymous · 0⤊ 0⤋
A govenor is there to restrict the top speed in revolutions that the engine can achieve its normally located in the actual injection pump and shouldnt be tampered with
2007-01-14 15:15:01 · answer #6 · answered by gav552001 5 · 3⤊ 1⤋
Like the other answers it limits speed if it 93 or later probably electronic and is inside brain.
2007-01-14 16:58:20 · answer #7 · answered by ctlyle43 3 · 0⤊ 0⤋