GB1261300A - Improvements in and relating to fuel injection systems for internal combustion engines - Google Patents

Improvements in and relating to fuel injection systems for internal combustion engines

Info

Publication number
GB1261300A
GB1261300A GB4497970A GB4497970A GB1261300A GB 1261300 A GB1261300 A GB 1261300A GB 4497970 A GB4497970 A GB 4497970A GB 4497970 A GB4497970 A GB 4497970A GB 1261300 A GB1261300 A GB 1261300A
Authority
GB
United Kingdom
Prior art keywords
transistor
emitter
base
collector
fuel injection
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.)
Expired
Application number
GB4497970A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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
Priority claimed from DE19691948002 external-priority patent/DE1948002C3/en
Priority claimed from DE19702006281 external-priority patent/DE2006281A1/en
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1261300A publication Critical patent/GB1261300A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/32—Controlling fuel injection of the low pressure type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/001—Fuel-injection apparatus having injection valves held closed mechanically, e.g. by springs, and opened by a cyclically-operated mechanism for a time
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/07—Nozzles and injectors with controllable fuel supply
    • F02M2700/072—Injection valve actuated by engine for supply of pressurised fuel; Electrically or electromagnetically actuated injectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

1,261,300. Fuel injection systems. ROBERT BOSCH G.m.b.H. Sept.22, 1970 [Sept.23, 1969; Feb.12, 1970], No.44979/70. Heading G1N. In an I.C. engine fuel injection control system, the power stage 60, which applies the injection control pulses to the solenoid injection valves 11, includes an n-p-n silicon power transistor 66 having its collector connected to the positive lead 26, the negative lead being earthed, and its emitter connected to the solenoid windings, and a base leakage resistance path for protecting the base-emitter path of the transistor 66. As shown, this path is provided by a resistor 69, and in a modification, Fig.3 (not shown), a free-running diode is connected between the negative lead and the collector of amplifying transistor 64, the latter collector being connected to the base of transistor 66 by a resistor. In alternatives, Figs.4 and 5 (not shown), the base leakage resistance path is provided by the collector-emitter path of a transistor, the emitter of said transistor being connected to the emitter of transistor 66, and a diode bridging the base of said transistor and its emitter.
GB4497970A 1969-09-23 1970-09-22 Improvements in and relating to fuel injection systems for internal combustion engines Expired GB1261300A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19691948002 DE1948002C3 (en) 1969-09-23 1969-09-23 Electrically controlled fuel injection system for an internal combustion engine
DE19702006281 DE2006281A1 (en) 1970-02-12 1970-02-12 Electrically controlled fuel injection system

Publications (1)

Publication Number Publication Date
GB1261300A true GB1261300A (en) 1972-01-26

Family

ID=25757930

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4497970A Expired GB1261300A (en) 1969-09-23 1970-09-22 Improvements in and relating to fuel injection systems for internal combustion engines

Country Status (13)

Country Link
JP (1) JPS4943748B1 (en)
AT (1) AT305700B (en)
AU (1) AU2019770A (en)
BE (1) BE756473A (en)
CH (1) CH514072A (en)
CS (1) CS148107B2 (en)
DK (1) DK134358B (en)
ES (1) ES383859A1 (en)
FR (1) FR2059442A5 (en)
GB (1) GB1261300A (en)
NL (1) NL7013987A (en)
SE (1) SE345720B (en)
SU (1) SU552909A3 (en)

Also Published As

Publication number Publication date
SU552909A3 (en) 1977-03-30
DK134358C (en) 1977-03-21
JPS4943748B1 (en) 1974-11-22
AU2019770A (en) 1972-03-23
DK134358B (en) 1976-10-25
NL7013987A (en) 1971-03-25
SE345720B (en) 1972-06-05
BE756473A (en) 1971-03-01
ES383859A1 (en) 1973-03-01
AT305700B (en) 1973-03-12
FR2059442A5 (en) 1971-05-28
CH514072A (en) 1971-10-15
CS148107B2 (en) 1973-02-22

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