Control method for turbocharged diesel engines having exhaust gas recirculation

Patent · 13 March 2000

OSTI ID:872900

Kolmanovsky, Ilya V ^[1]; Jankovic, Mrdjan J ^[2]; Jankovic, Miroslava ^[2]

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1. Ypsilanti, MI
2. Birmingham, MI

A method of controlling the airflow into a compression ignition engine having an EGR and a VGT. The control strategy includes the steps of generating desired EGR and VGT turbine mass flow rates as a function of the desired and measured compressor mass airflow values and exhaust manifold pressure values. The desired compressor mass airflow and exhaust manifold pressure values are generated as a function of the operator-requested fueling rate and engine speed. The EGR and VGT turbine mass flow rates are then inverted to corresponding EGR and VGT actuator positions to achieve the desired compressor mass airflow rate and exhaust manifold pressure. The control strategy also includes a method of estimating the intake manifold pressure used in generating the EGR valve and VGT turbine positions.

• Research Organization: MIDWEST RESEARCH INSTITUTE
• DOE Contract Number: AC36-83CH10093
• Assignee: Ford Global Technologies, Inc. (Dearborn, MI)
• Patent Number(s): US 6035640
• Application Number: 09/237,332
• OSTI ID: 872900
• Country of Publication: United States
• Language: English

Related Subjects

/60/123/
achieve
actuator
airflow
compression
compression ignition
compressor
control
control method
control strategy
controlling
corresponding
desired
diesel
diesel engine
diesel engines
egr
engine
engine speed
engines
estimating
exhaust
exhaust gas
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flow rate
flow rates
fueling
function
gas
gas recirculation
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generating
ignition
ignition engine
intake
inverted
manifold
mass
mass flow
measured
method
operator-requested
positions
pressure
pressure value
pressure values
rate
rates
recirculation
speed
steps
strategy
turbine
turbine mass
turbocharged
values
valve
vgt