Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2007-04-24
2008-12-16
Wolfe, Jr., Willis R. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C701S115000, C123S0780AA, C123S435000
Reexamination Certificate
active
07467041
ABSTRACT:
A workload calculation apparatus and method for an internal combustion engine, and an engine control unit are provided for accurately calculating a workload parameter indicative of the workload of the internal combustion engine. The workload calculation apparatus of the internal combustion engine ignition, which calculates the workload parameter indicative of the workload of the internal combustion engine, sets a first correlation function indicative of an integral of the product of volume data indicating a change state of the volume of the combustion chamber and a reference signal having a predetermined frequency k; generates the reference signal; detects in-cylinder pressure change amount data indicative of the amount of change in the pressure in the combustion chamber; calculates, on the basis of the generated reference signal and the detected in-cylinder pressure change amount data, a second correlation function indicative of an integral of the product of the reference signal and the in-cylinder pressure change amount data; and calculates the workload parameter on the basis of the first and second correlation functions.
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European Search Report with English language translation, Jul. 11, 2008, a total of 8 pages.
Nagashima et al., “New Indicated Mean Effective Pressure Measuring Method and Its Applications”, Jan. 1, 2002, JSAE Review, Society of Automotive Engineers of Japan, vol. III, No. 3, pp. 2982-2987.
Okubo Katsura
Sato Masahiro
Shinozaki Koichiro
Yasui Yuji
Hoang Johnny H.
Honda Motor Co. Ltd.
Squire Sanders & Dempsey L.L.P.
Wolfe, Jr. Willis R.
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