JPS57184926A - Characteristic transducer for economical fuel cost travelling indicator - Google Patents

Characteristic transducer for economical fuel cost travelling indicator

Info

Publication number
JPS57184926A
JPS57184926A JP6905281A JP6905281A JPS57184926A JP S57184926 A JPS57184926 A JP S57184926A JP 6905281 A JP6905281 A JP 6905281A JP 6905281 A JP6905281 A JP 6905281A JP S57184926 A JPS57184926 A JP S57184926A
Authority
JP
Japan
Prior art keywords
voltage
operational amplifier
given
fuel cost
signals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP6905281A
Other languages
Japanese (ja)
Other versions
JPH0221530B2 (en
Inventor
Yukichi Sekiguchi
Takashi Okubo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MITSUWA SEIKI CO Ltd
Sanwa Seiki Ltd
Original Assignee
MITSUWA SEIKI CO Ltd
Sanwa Seiki Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MITSUWA SEIKI CO Ltd, Sanwa Seiki Ltd filed Critical MITSUWA SEIKI CO Ltd
Priority to JP6905281A priority Critical patent/JPS57184926A/en
Publication of JPS57184926A publication Critical patent/JPS57184926A/en
Publication of JPH0221530B2 publication Critical patent/JPH0221530B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • F02B77/084—Safety, indicating, or supervising devices indicating economy

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Volume Flow (AREA)

Abstract

PURPOSE:To obtain the characteristic transducer having general-purpose property by completely bringing output voltage to zero value when voltage signals corresponding to the number of revolution of an engine reaches not less than reference voltage previously set. CONSTITUTION:The voltage signals Ei corresponding to the number of revolution of the engine are given to an operational amplifier OP1, and compared with reference voltage e1, and a transistor Q is conducted and the application of bias voltage e2 to the positive input terminal of an operational amplifier OP3 is obstructed when Ei>=e1 is formed. On the other hand, the signals Ei are given to the negative input terminal of the OP3 through an operational amplifier OP2, and voltage E0 is obtained as the output. The voltage E0 is given as straight lines L1-L3 when Ei<e1 is formed and as straight lines L5, L6 when Ei>=e1 is formed, and a region corresponding to economical fuel cost travelling region surrounded by the L2, L5 together with the saturation voltage L4 of the OP3 is obtained. Accordingly, the output voltage E0 can be brought to zero value completely when Ei>=e1 is formed, circuit constants are selected within a wide range and general-purpose property can be improved.
JP6905281A 1981-05-08 1981-05-08 Characteristic transducer for economical fuel cost travelling indicator Granted JPS57184926A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6905281A JPS57184926A (en) 1981-05-08 1981-05-08 Characteristic transducer for economical fuel cost travelling indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6905281A JPS57184926A (en) 1981-05-08 1981-05-08 Characteristic transducer for economical fuel cost travelling indicator

Publications (2)

Publication Number Publication Date
JPS57184926A true JPS57184926A (en) 1982-11-13
JPH0221530B2 JPH0221530B2 (en) 1990-05-15

Family

ID=13391405

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6905281A Granted JPS57184926A (en) 1981-05-08 1981-05-08 Characteristic transducer for economical fuel cost travelling indicator

Country Status (1)

Country Link
JP (1) JPS57184926A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50141371A (en) * 1974-04-30 1975-11-13

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50141371A (en) * 1974-04-30 1975-11-13

Also Published As

Publication number Publication date
JPH0221530B2 (en) 1990-05-15

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