Method and apparatus for fuel metering in internal combustion engines

Patent · Tue Nov 23 00:00:00 EST 1982

OSTI ID:6465324

Becker, W; Boehringer, A; Eisele, H

A fuel control system for an internal combustion engine with correction for optimum values based on a variety of factors. Characteristic engine data is stored in preferably digital memories with capabilities for interpolation. Upon addressing the engine data fields with input signals related to current operational variables, for example the accelerator pedal position , the control system derives therefrom a nominal air flow rate which is used as the reference value in a control loop that sets the amount of recycled exhaust gas and the fresh air flow. As the actual air flow rate approaches the reference value, the fuel flow is adjusted to insure correct mixtures at all times. In another embodiment, the fuel is supplied on demand but cannot exceed a maximum value except under special override conditions. Several other embodiments and variants are presented.

• Assignee: Bosch, Robert Gmbh (Germany, Federal Republic Of)
• Patent Number(s): US 4359991
• OSTI ID: 6465324
• Resource Relation: Patent Priority Date: Priority date 28 Jan 1978, Germany, Federal Republic of (F.R. Germany); Other Information: PAT-APPL-228399
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
FUEL-AIR RATIO
CONTROL SYSTEMS
INTERNAL COMBUSTION ENGINES
AIR FLOW
CLOSED-LOOP CONTROL
DIESEL ENGINES
EXHAUST GASES
EXHAUST RECIRCULATION SYSTEMS
FLOW RATE
SIGNALS
CONTROL
ENGINES
EQUIPMENT
EXHAUST SYSTEMS
FLUID FLOW
FLUIDS
GAS FLOW
GASEOUS WASTES
GASES
HEAT ENGINES
POLLUTION CONTROL EQUIPMENT
WASTES
330100* - Internal Combustion Engines