Download Gasoline Fuel-Injection System K-Jetronic: Technical by Robert Bosch PDF
By Robert Bosch
Read Online or Download Gasoline Fuel-Injection System K-Jetronic: Technical Instruction 96/97 PDF
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Extra resources for Gasoline Fuel-Injection System K-Jetronic: Technical Instruction 96/97
This is particularly important with regard to the cold-start and hotstart behavior. Automatic couplings in the hoses prevent the escape of fuel. K-Jetronic Workshop testing techniques Lambda closed-loop-control tester On K-Jetronic systems with Lambda closed-loop control, this tester serves to check the duty factor of the Lambda-sensor signal (using simulation of the “rich”/ “lean” signal), and the “open-loop/closedloop control function”. Special adapter lines are available for connection to the Lambda-sensor cable of the various vehicle models.
It is particularly suitable for use with Jetronic gasolineinjection systems or Motronic. Using the closed-loop control circuit formed with the aid of the Lambda sensor, deviations from a specified air-fuel ratio can be detected and corrected. This control principle is based upon the measurement of the exhaust-gas oxygen by the Lambda sensor. The exhaust-gas oxygen is a measure for the composition of the air-fuel mixture supplied to the engine. 00. 00 figure, the voltage of the sensor output signal changes abruptly.
29 Fig. 28 Dependence of the control pressure on engine load Control pressure Idle and part load UMK0019E Full load Engine load Fig. 29 Acceleration response Behavior of the K-Jetronic when the throttle valve is suddenly opened. 4 s UMK1659E 0 28 3 UMK0127Y 1 Electrical connection, 2 Electrical heating, 3 Bimetal spring, 4 Perforated plate. Throttle-valve opening Full-load enrichment Engines operated in the part-load range with a very lean mixture require an enrichment during full-load operation, in addition to the mixture adaptation resulting from the shape of the air funnel.