Robert Boschgmbh

Jurgen Abt

Dieter Handtmann

Wolf Wessel

Ulrich Kuhn

Wilfried Sautter

Sybille Stumpf

Reinhard Schwartz

Werner Banzhaf

Michael Specker

Heins Bollhagen

Gerold Lemperle

Bertold Wocher

Gerhard Felten

Method for measuring the control cross section area of a nozzle

A method for determining the closing point of a pump piston relative to a transverse bore in a corresponding pump cylinder, the method including the steps of providing compressed air to the cylinder via the transverse bore, axially sliding the pump piston near the closing point, consecutively measuring two flow values through a throttle cross-section defined by the pump piston and transverse bore, measuring the positions of the piston corresponding to the two flow values and extrapolating the pump piston unto the closing point from the flow values and piston positions.

Method for determining the closing point of a pump piston relative to a

An arrangement for measuring of the injection quantity, the injection beginning and the injection end of individual injections of an intermittently operating injection pump, has an injection chamber, an adjustable throttle connectable with the injection chamber at one location, a movable wall limiting the injection chamber at another location against the counterforce, a path sensor arranged to receive the position of the movable wall and supply a signal for adjustment of throttle.

Arrangement for measuring injection quantities

A fuel injection system for an internal combustion engine whose air induction tube contains an air flow rate measuring member with non-linear operating characteristics, coupled to a potentiometric transducer which produces the electric command variable for a follower control loop. A control amplifier drives a servomotor which sets the metering slide of a fuel metering valve assembly. The servomotor shaft is coupled to a second potentiometric transducer whose output is compared with the command variable in a bridge circuit connected to the input of the control amplifier. The mechanical link between the servomotor and the fuel metering slide has a non-linearity similar to that of the air flow rate measuring member.

Fuel injection system

The airflow rate through the induction tube of an internal combustion engine is measured by a first transducer which delivers a set point signal to a control amplifier. The amplifier also receives a feedback signal from a second transducer which monitors the position of a servo-motor controlling the quantity of fuel metered out to the engine. The feedback loop maintains a desired fuel-air ratio and includes provision for calibration and adjustment.

Growing community of inventors

Gerlingen, Germany

Jurgen Abt