EP 0119297 A3 19860813 - MEASUREMENT APPARATUS FOR CONTINUOUSLY DETERMINING OPERATING PARAMETERS OF A COMBUSTION ENGINE
Title (en)
MEASUREMENT APPARATUS FOR CONTINUOUSLY DETERMINING OPERATING PARAMETERS OF A COMBUSTION ENGINE
Publication
Application
Priority
DE 3242317 A 19821116
Abstract (en)
[origin: US4541271A] The invention is directed to a measuring arrangement for detecting injection-begin in an internal combustion engine equipped with fuel injection valves. The measuring arrangement includes an inductive position transducer controlled by a current source. The current source is regulated against changes in the level of the supply voltage and elements for stabilization against noise impulses on the supply voltage are provided. The operating point of the output transistor of the current source is regulated in response to sharp drops in the level of the supply voltage thereby obtaining an improved signal-to-noise ratio. The output current of the current source is stabilized with respect to noise by elements of a coupling connected between the base of the output transistor and the supply voltage. By controlling the output current of the current source in dependence upon the rotational speed and/or the amplitude of the output signal of the measuring arrangement, it is possible to obtain an injection-begin signal of constant amplitude over the entire range of the rotational speed, temperature, and fabrication tolerances of the sensors.
IPC 1-7
IPC 8 full level
G01M 15/04 (2006.01); F02D 41/00 (2006.01); F02D 41/20 (2006.01); F02D 41/30 (2006.01); F02M 65/00 (2006.01); G01D 21/00 (2006.01)
CPC (source: EP US)
F02D 41/20 (2013.01 - EP US); F02D 2041/2055 (2013.01 - EP US); F02D 2041/2058 (2013.01 - EP US)
Citation (search report)
- [XP] EP 0068323 A2 19830105 - NISSAN MOTOR [JP]
- [XD] DE 3032381 A1 19820408 - BOSCH GMBH ROBERT [DE]
- [A] US 3011486 A 19611205 - PRIBBLE NOBLE F
- [AD] DE 2449836 A1 19760429 - BOSCH GMBH ROBERT
- [A] ELECTRONIC INDUSTRIES, Band 22, Nr. 12, Dezember 1963, Seiten 63 und 64, Radnor, US; V.R. CUNNINGHAM: "Reducing ripple in regulated supplies"
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DE 3242317 A1 19840517; DE 3379797 D1 19890608; EP 0119297 A2 19840926; EP 0119297 A3 19860813; EP 0119297 B1 19890503; JP S59101000 A 19840611; US 4541271 A 19850917
DOCDB simple family (application)
DE 3242317 A 19821116; DE 3379797 T 19831014; EP 83110244 A 19831014; JP 20379383 A 19831101; US 55172083 A 19831115