发明名称 |
Correction of systematic position-sensing errors in internal combustion engines |
摘要 |
Systematic errors in manufacturing of position markers of an internal combustion engine position sensing system are corrected by a procedure which detects nonuniformities in the placement of the position markers using an engine coastdown without combustion in the cylinders. Since the coastdown comprises a smooth deceleration, any nonuniformities detected in the velocities calculated for individual firing intervals during the coastdown are a manifestation of nonuniformities in the position marker placement. These nonuniformities are used to calculate correction factors which are stored for use when calculating velocities during engine combustion. |
申请公布号 |
US5117681(A) |
申请公布日期 |
1992.06.02 |
申请号 |
US19900590729 |
申请日期 |
1990.10.01 |
申请人 |
FORD MOTOR COMPANY |
发明人 |
DOSDALL, JAMES M.;JAMES, JOHN V. |
分类号 |
F02D41/24;F02D41/34;F02P7/067;F02P7/077;G01M15/06;G01M15/11;G01P3/48;G01P21/02 |
主分类号 |
F02D41/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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