Title:
DISCHARGE QUANTITY ESTIMATING DEVICE FOR FUEL PUMP FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP3677590
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To estimate the discharge quantity of a high pressure pump for an internal combustion engine.
SOLUTION: Fuel temperature is estimated (S1), fuel properties (heavy and light qualities) are judged (S2), viscosity and density of fuel are estimated from the fuel temperature and the fuel properties (S3), the rotational speed Np of a fuel pump is calculated (S4), and an ejection quantity from the fuel pump is estimated with accuracy on the basis of the rotational speed NP while taking in consideration the viscosity and density of fuel (S5).
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Inventors:
Hajime Hosoya
Naoki Tomizawa
Masayuki Yasuoka
Naoki Tomizawa
Masayuki Yasuoka
Application Number:
JP10163896A
Publication Date:
August 03, 2005
Filing Date:
April 23, 1996
Export Citation:
Assignee:
株式会社日立製作所
日産自動車株式会社
日産自動車株式会社
International Classes:
F02M65/00; (IPC1-7): F02M65/00
Domestic Patent References:
| JP849590A | ||||
| JP7286538A | ||||
| JP557996A |
Attorney, Agent or Firm:
Tomijio Sasashima