Robert Boschgmbh

Friedbert Michel

Josef Steiner

Gerhard Stumpp

A fuel injection system for continuous fuel injection into the induction manifold of an internal combustion engine. Upstream of the main throttle, there is disposed a baffle plate on a pivoting lever which act as an air flow rate meter and displaces the slide valve of a fuel metering assembly in proportion to the air flow rate. An electromagnetic actuator, attached to the induction tube, has a movable armature on which there is disposed a spring. During engine starting at temperatures below approximately 30 degrees C., the restoring force on the air flow rate meter is so low that the force of the actuator spring is able to displace the pivoting lever and the slide valve in the direction of greater fuel delivery, thereby providing cold starting assistance. In other embodiments, the temperature dependence is increased by using a bimetallic spring on the actuator.In a further embodiment, the actuator is attached to the operating lever.

Fuel injection system

In each fuel injection valve forming part of a fuel injection apparatus and associated with an internal combustion engine, there is disposed an electric heater which transmits heat to the fuel by contact-type heat exchange. The heat output of each heater is controlled by a device which processes input signals representing different engine variables.

Apparatus for the cold starting and warming run of spark plug-ignited

A fuel injection system for mixture-compressing, externally ignited internal combustion engines of the type employing continuous fuel injection with an induction tube. A measuring member, as well as an arbitrarily actuatable throttle butterfly valve are disposed in sequence within the induction tube. A fuel metering and quantity distribution valve assembly is controlled by the measuring member in proportion to air flow rate. Pressurized fluid, preferably fuel, provides a restoring force for the measuring member, via a control pressure circuit. At least one pressure control valve is provided for controlling the pressure in the control circuit in dependence on motor parameters. A heatable control element, operating in dependence on temperature, forms part of the control valve. The heatable control element, which may be a bimetallic spring, acts in opposition to the force of another spring. Instrumentalities are provided for reducing the pressure of the pressurized fluid in the control pressure circuit during the warm-up phase when the engine is suddenly accelerated.

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Kornwestheim, Germany

Friedbert Michel