Title:
ELECTROMAGNETIC VALVE CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2015102233
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To make deviation of a characteristic value acquired by estimation from an actual value small in a case where the characteristic value to be a value related to the relationship between voltage and current in a coil is acquired by estimation, in an electromagnetic valve control device.SOLUTION: A temperature correction coefficient KTR of a pressure reduction linear valve is estimated based on temperature (S25), and a temperature correction coefficient KTA of a pressure increase linear valve is acquired by actually supplying current (S11, S12). When the estimation value of the temperature correction coefficient KTR of the pressure reduction linear valve is smaller than the actual value of the temperature correction coefficient KTA of the pressure increase linear valve (YES in determination of S26), the estimation value is corrected to the same value as the actual value (S28).
Inventors:
SATO KEI
Application Number:
JP2013245914A
Publication Date:
June 04, 2015
Filing Date:
November 28, 2013
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F16K31/06; B60T8/36; H01F7/18
Domestic Patent References:
| JP2010095206A | 2010-04-30 | |||
| JP2000009249A | 2000-01-11 | |||
| JP2013217395A | 2013-10-24 | |||
| JPH109434A | 1998-01-13 |
Attorney, Agent or Firm:
Chubu International Patent Office
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