Oct 10, 2016 pdf online gasoline fuelinjection system kejetroniccheck link. In the le jetronic system, the injection valves spray the fuel simultaneously, what is to say, they are all driven at the same time. Bosch kejetronic system description free download as pdf file. Fuel injection system the ke2 jetronic fuel injection system is fitted to turbocharged engines. To reduce fuel consumption and to meet more stringent emission standards the electronically assisted ke jetronic followed soon. Way more information than you ever wanted on how to fell a tree. The only vehicle that runs a higher pressure than this is the porsche turbo carrara models from 1975 to 1979 which have a system pressure of 600 kpa. Bosch k jetronic fuel injection service repair manual. Mechanical gasoline fuelinjection system with lambda closed. Product information automotive gasoline systems diagnostics and. Automotive equipment business sector, department for automotive services, technical publications khpdi2. Apart from minor alterations the basic principles of the hydraulics and mechanics used on the k jetronic system are unchanged on the ke jetronic system.
The following table is a guide to the fuel paths marked by each blue arrow in figure 6. Pdf gasoline engine management systems and components. Gasoline fuelinjection system kjetronic gasoline engine management technical instruction. The system pressure of the k jetronic can not be reduced like an efi system when cleaning with our lb2912f flow meter. Aug 20, 20 this video is the working principle animation of electronic fuel injection system. Now let us have a look how bosch ke jetronic fuel injection system can be diagnosed and repaired on an example of audi 100 2. Originally, volkswagen adapted the l jetronic for the type 4 air cooled 411 engines sold in the united states due to more stringent emissions and fuel consumption regulations. Kjetronic is the term used by bosch to describe a fuel injection system which features.
The mechanical fuel injection system has recently been overshadowed by modern electronic injection, which enables the use of lambda closed loop control. The system is based on the kjetronic mechanical system, with the addition of an electrohydraulic actuator, essentially a fuel injector. Combustion in the gasoline engine the sparkignition or ottocycle engine 2 gasoline engine management technical requirements 4 cylinder charge 5 mixture formation 7 ignition function and requirements 10 inductive ignition systems gasoline injection systems overview 16 mmotronic engine management mmotronic. Gasoline fuelinjection system with lambda closedloop control ke jetronic. Apr 14, 2016 different gasoline fuelinjection system kejetronic. Autozone repair guide for your fuel system gasoline fuel injection systems lhjetronic, lhii jetronic and lhjetronic 2. Whereas the increase in engine power was the main object at the start of development work on gasoline injection, today we are spurred on by the necessity to improve the fuel. Mechanical fuel injection bosch kjetronic, bosch k jetronic fig. Airflow calculation via throttlevalve angle and engine speed. Kjetronic is different from pulsed injection systems in that the fuel flows continuously from all. Bosch ke jetronic system the bosch ke jetronic fuel injection system is fitted to escort rs turbo models and is a further development of the k jetronic system. The bosch l jetronic fuel injection system used in the porsche 912e is often referred to as the air flow controlled or afc fuel injection system.
File type pdf bosch k jetronic fuel injection service repair manual bosch k jetronic fuel injection service repair manual bosch kjetronic cis explained bosch k jetronic fuel distributor quick look whilst ive got it out of the car i thought id give you a quick look at a fuel distributor from a bosch ke jetronic or cis. The gasoline engine management system electronically controls combustion parameters amounts of air and fuel and ignition timing to increase engine output and reduce emissions and fuel. Injection systems for gasoline engines could be operated mechanically. Kejetronic 19851993 electronically controlled mechanical fuel injection. Aug 11, 2014 gasoline engine management gasoline fuel injection system k jetronic technical instruction published by. Kejetronic cise fuel pressure testing is very similar to the old mechanical version. Ive been having this problem whereby upon acceleration especially from stop my 420sel stutters and stumbles, then catches and continuous accelerating just fine. Whereas the increase in engine power was the main object.
In 1982, the kjetronic model became available in an expanded configuration, the ke jetronic, including an electronic closedloop control circuit and a lambda oxygen sensor. The kjetronic system operates without a drive and injects the fuel continuously. It was a very clever system, which could compensate for variables like engine temperature and air density without the use of electronics. Originally, volkswagen adapted the ljetronic for the type 4 air cooled 411 engines sold in the united states due to more stringent emissions and fuel consumption regulations.
Gasoline fuel injection system k jetronic ke jetronic a gasoline injection system must inject precisely the correct amount of fuel for the various operating conditions. Click download or read online button to get gasoline fuel injection system ke jetronic book now. Cis bosch kjetronic fuel injection pressue tester mercedes. Then, the command unit processes this information received and calculate the appropriate fuel injection time, through an electric signal. Let me tell you a short story about what really kejetronic is, just in case somebody doesnt know it so far. R02cr e b colqegu couivo\ aglase we guq ph ph ecn le logq coucvtloue eae16uj sqgble 10 cugua vqsblsqou ob6lguua couqguoue guq nuq6l bgl11cr1gl logq. Operation and components of the bosch k ke jetronic. Gasolineengine management gasoline fuelinjection system kjetronic technical instruction. In the 1970s a relatively inexpensive and reliable fuel injection system has been invented. Ignition and gasoline injection systems from bosch a5 monojetronic components intake module gasoline direct injection 1982 ke jetronic market launch the kjetronic was extended to include an electronic control loop and the lambda sensor and was employed for the.
Petrol is a highly dangerous and volatile liquid and the precautions necessary when handling it cannot be overstressed. If in doubt, spray break cleaner on pipes, hoses, injectors, intake manifold and map sensor. Combustion in the gasoline engine the sparkignition or ottocycle engine 2 gasoline engine management technical requirements 4 cylinder charge 5 mixture formation 7 gasoline injection systems overview 10 k jetronic system overview fuel supply 14 fuel metering 18 adapting to operating conditions 24 supplementary functions 30 exhaustgas treatment 32 electrical circuitry 36 workshop testing. Detach the operational relay set from the relay block as well as from the safety appliance located under the steering tube. Thisis necessary due to the added complexity and increased power output of the engine, the system provides a higher degree of mixture strength control than that provided by the k jetronic system. Infact i used my same tester i bought years ago to work on my none 450sel 6. The engine control unit ecu may be either analog or digital, and the system may or may not have closedloop lambda control. Gasoline fuelinjection system kejetronic bosch, robert on. The primary pressure regulator that is installed in the fuel distributor housing maintains a constant pressure in the fuel system of the k jetronic. Gasoline injection systems overview 10 k jetronic system overview fuel supply 14 fuel metering 18 adapting to operating conditions 24 supplementary functions 30 exhaustgas treatment 32 electrical circuitry 36 workshop testing techniques 38 k jetronic since its introduction, the k jetronic gasoline injection system has pro.
A friend of mine loaned me under penalty of death if i lose it a cis bosch i jetronic fuel injection pressure tester. The bosch ljetronic fuel injection system used in the porsche 912e is often referred to as the air flow controlled or afc fuel injection system. Ignition and gasolineinjection systems from bosch a5 monojetronic components intake module gasoline direct injection 1982 kejetronic market launch the kjetronic was extended to include an electronic control loop and the lambda sensor and was employed for the. Chapter of d jetronic articles by drdjet describes systematic fault finding troubleshooting and repair on your bosch fuel injection system. The fuel system comprises a centrally mounted fuel tank, electricallyoperated fuel pump and bosch kjetronic or kejetronic continuous injection system. May 28, 20 ke jetronic fuel mixture adjustment in the mid 1970s, robert bosch gmbh developed a mechanical fuel injection system called k konstant jetronic.
Underhoodservice bosch kjetronic fuel injection system service the bosch kjetronic is a mechanical fuelinjection system which was introduced in 1972. Apr 28, 2016 k jetronic fuel injection system k jetronic is a mechanically and hydraulically operated fuel injection pump, introduced by bosch gmbh in the year 1973. Since the electric fuel pump supplies more fuel that is used by the engine, a valve in the pressure regulator opens and returns this excess fuel to the fuel tank. It gives the clear idea about how to work a fuel injection system. Whereas the increase in engine power was the main object at the start of development work on gasoline. Today, it has been superseded by gasoline injection. Nov 21, 2009 fuel injection although current systems rely almost although the kjetronic layout served as exclusively on mixture formation outside the mechanical basis for the kejetronic the combustion chamber, concepts based system, the latter employs expanded on internal mixture formation with fuel datamonitoring functions for more being injected.
Bosch ke jetronic continuous injection system mechanical fuel injection overview part 1of 6 fuel injection system bosch cise 1986 fuel systems mercedesbenz cise electronic control system description the fuel injection system used on all mercedesbenz gasoline engine vehicles uses. Gasoline engine management gasoline fuelinjection system kjetronic technical instruction published by. Electronically controlled gasoline fuelinjected system with lambda. Robert bosch gmbh, 2000 postfach 30 02 20, d70442 stuttgart. Jetronic is a trade name of a fuel injection technology for automotive petrol engines, developed. Gasoline fuelinjection system monojetronic robert bosch on. Combined mechanicalelectronic fuel injection although the k jetronic layout served as the mechanical basis for the ke jetronic system, the latter employs expanded datamonitoring functions for more precise adaptation of injected fuel quantity to specific engine operating conditions. Pdf online gasoline fuelinjection system kejetroniccheck link. Bosch k jetronic fuel injection manual pdf document. Additional electronics record a variety of measurement variables in the engine, thus permitting optimization of fuel. Bosch kjetronic and kejetronic mechanical fuel injection systems. Between the years 1973 and 1995, the highly reliable, mechanical multipoint injection system kjetronic was installed as original equipment in seriesproduction vehicles. Combined mechanicalelectronic fuel injection although the kjetronic layout served as the mechanical basis for the ke jetronic system, the latter employs expanded datamonitoring functions for more precise adaptation of injected fuel quantity to specific engine operating conditions. Bosch kejetronic system description fuel injection engines.
Since their introduction, jetronic fuel injection systems have. Gasoline injection systems overview 10 ke jetronic system overview, advantages 12 fuel supply 14 fuel metering 18 adaptation to operating conditions 22 supplementary functions 33 electrical circuitry 36 workshop testing techniques 38 ke jetronic since their introduction, the ke jetronic systems have proved themselves in millions of automobiles. Bosch kejetronic system description fuel injection. Gasoline fuel injection system ke jetronic bosch, robert on. In 2012, roughly 60 percent of all newly manufactured vehicles featured gasoline portfuel injection. Fuel injection system warning residual pressure will remain in the fuel.
The bosch continuous injection system cis is a hydraulictype fuel injection system which uses an air flow sensor, that is mechanically connected to a hydraulic valve, to control injection quantity. Download pdf performance fuel injection systems hp1557 how to design build modify and tune efi and ecu. Ke jetronic a gasoline injection system must inject precisely the correct amount of fuel for the various operating conditions. This video is the working principle animation of electronic fuel injection system.
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