Apparatus for controlling the ratio of air to fuel quantity in internal combustion engines

Patent · Tue Dec 22 04:00:00 EST 1981

OSTI ID:5483662

Walz, L; Wessel, W

An apparatus is proposed which serves to control the ratio of air to fuel quantity of the operational mixture to be introduced into the combustion chambers of an internal combustion engine. The actual fuel quantity supplied via an injection apparatus and the actual air quantity supplied via the intake manifold of the engine are measured and processed in a control apparatus into a correction adjusting variable. The apparatus further functions with exhaust recirculation, with the aspirated fresh air quantity being dosed and the remnant filling of the gaseous filling introduced into the combustion chambers of the engine is replaced by recirculated exhaust gas. For the purpose of dosing the fresh air, a symmetrical throttle valve is disposed in the intake manifold, whose position is transferred by means of pneumatic servomotor to a second throttle device, by means of which finally the quantity of the recirculated exhaust gas is determined.

• Assignee: Bosch, Robert Gmbh (Germany, Federal Republic Of)
• Patent Number(s): US 4306534
• OSTI ID: 5483662
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
330700 -- Advanced Propulsion Systems-- Emission Control
COMBUSTION CHAMBERS
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FLOW REGULATORS
FUEL SYSTEMS
FUEL-AIR RATIO
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
POLLUTION CONTROL EQUIPMENT
VALVES