Subaru Robin Power Products RGV6100 Description, Principle of Sensing OIL Level, HOW IT Operates

Page 22

5-4 OIL SENSOR

5-4-1 DESCRIPTION

*The oil sensor mainly functions to detect posi- tion of the surface of engine oil in the crankcase of engines for general use and to stop the en- gine automatically when the oil level goes down below the lower limit specified. This prevents sei- zure of engine from occurring due to insufficient amount of oil in the crankcase.

*Since the sensor has been designed to consume a part of power supplied to the igniter to ener- gize its electronics circuit, any other external power supply is not necessary so that it can be mounted at the oil filler port.

OIL SENSOR

Fig. 5-15

Introduction of newly developed sensing principle features super durability and no change with the passage of time as it does not use any moving part.

Merits due to introduction of electrical conductivity detection are as follows ;

1It has resistance to mechanical shocks and property of no change with the passage of time as sensing element consists simply of electrodes having no moving parts.

2At the same time, it is capable of detecting the oil level stably as it is not influenced by engine vibrations.

3No error occurs due to foam and flow of the oil.

4Influence against the ignition system or the electronics units can be neglected because an electric current supplied to the sensor can be decreased.

5-4-2 PRINCIPLE OF SENSING OIL LEVEL

There is a great difference between electric resistance of air and that of oil. Since the resistance of air is far higher than that of oil, more electric current passes through the oil than through the air, although absolute value of the current is very small. The sensor detects this current difference and make use of it. The sensor judges the oil quantity, by comparing a current flowing across a pair of electrodes (inner and outer) with the reference, in such a way that if a current flows between the electrodes more than the reference, sufficient oil is in the crankcase, on the other hand, if a current flows less than the reference, oil is not sufficient. Since an electric current is flown to detect oil quantity, this is called the “electrical conductivity detection” type of sensor. The oil level to be detected is determined by the length of elec- trodes and their mounting positions with the engine.

5-4-3 HOW IT OPERATES

[Power supply]

The sensor makes use of a part of primary power source for ignition of the engine (igniter) to drive the sensor circuit. Power to the sensor can usually be derived from the “stop button” by branching wires out.

- 19 -

Page 21 Page 23
Image 22
Page 21 Page 23
Contents RGV2800, RGV4100, RGV6100 Generators Contents Wiring Diagram Disassembly and AssemblyTroubleshooting Specifcations Generator Trouble ShootingModel SpecificationsEngine RGV2800 RGV4100RGV6100 EH34DPerfomance Curves 250 125 240 120 230 115 220 110 230V/115V Load RatedDC Output Features Minimal Maintenance LONG-LIFE DurabilityExternal View General DescriptionOIL Drain Plug RGV2800 U.S.A., 60Hz-120V Nema Receptacle Control PanelRGV4100 U.S.A., 60Hz-120V/240V Nema Receptacle Location of Serial Number and Specification Number RGV6100 U.S.A., 60Hz-120V/240V Nema ReceptacleFunction Construction and FunctionConstruction StatorCondenser RotorObject or Protection NO-FUSE BreakerDC Circuit Breaker RGV2800Style Ampere AC plug DescriptionConnecting to Domestic Circuits House Wiring 240V appliance Generation of NO-LOAD Voltage Generator OperationVoltage Fluctuations Under Load Position Full Power Switch Dual Voltage TypeSwitch 120/240 Half of rated output Rated outputPage Principle of Sensing OIL Level Power supplyDescription HOW IT OperatesDecision of oil shortage Block Diagram of the CircuitJudgement of oil level Automatic stop of enginePage Do not place inflammable materials near the generator Safety PrecautionsDo not connect the generator to the commercial power lines Operate the generator on a level surfaceMercury lamps with a smaller power factor Incandescent lamp, heater, etc. with a power factorRange of Applications Appliances without any indication as to power consumption RGV2800 RGV4100 RGV6100Area / mm3 Current / a Sectional Allowable Gauge No Resistance10 a 12 a 15 a Measuring Instruments Measuring ProceduresSpecifications 1 Dr. Robin Generator TesterInstruments VoltmeterCircuit Tester DC Output Measuring AC Output MeasuringRated voltage 120 240 Stator Measuring Insulation ResistanceRotor Control Panel Voltmeter Checking Functional MembersAC Receptacles Specification AC Winding Condenser WindingCondenser Rotor Assembly75 Ω 77 Ω 60 Ω Apply red plus needle Brown Diode RectifierChecking table for analogue circuit tester Circuit tester OrangeCircuit tester Checking table for digital circuit testerApply black minus needle Brown Brown / WhiteDisassembly and Assembly Preparation and PrecautionsDisassembly Procedures Step Part to remove Description Remarks ToolRubber Pipe Hose Clamp Step Part to remove Description Remarks Tool M8 flange nut pcs Rear Cover Stator Cover Rear Cover Brushing Spring Seal Tape Part to remove Description Remarks Tool Tightening torque 11.8 13.7 N-m Assembly ProceduresFront Cover Tightening torque 11.3 13.2 N-m RGV2800Rear Cover Tightening torque 5.9 N-mEND Cover RGV4100 only FrameTightening torque 21.6 27.4 N-m Tightening torque 9.8 N-mTightening torque 18.6 24.5 N-m Tightening torque 6.9 N-m Front Panel DisassemblyChecking of the Front Panel Reassembly Tightening torque 1.5 N-mChecking Condenser TroubleshootingNo AC Output Checking StatorChecking Rotor RemedyChecking Engine Speed How to adjust engine r.p.mAC Voltage is TOO High or TOO LOW Checking RotorCheck if the Engine is Overheated Check the Engine SpeedCheck the Appliance for Trouble Check the Insulation of the GeneratorNo DC Output Idle Control Engine Speed is not Increased When a Load is AppliedCheck the DC Coil Dual Voltage Type Single Voltage TypeApply red plus needle Engine Speed is not Reduced When Load is OFF Normal ResistanceRGV2800 U.S.A., 60Hz-120V Type Nema Receptacle Wiring DiagramRGV4100 U.S.A., 60Hz-120V/240V Type Nema Receptacle RGV6100 U.S.A., 50Hz-120V/240V Type Nema Receptacle GeneratorWiring color cord RGV4100, 6100 Electric Starter TypeRGV4101RGV6101 OdelMRGV4101 RGV6101 Generator TroubleshootingRGV4101 85 Ω RGV4101 RGV6101 Check the Engine Speed No DC Output Checking table for analogue circuit tester Idle Control Optional Equipment Idelcontrolunit Output Wire ZCT TheIDELCONTROLUNIT Range of Applications Appliances without any indication as to power consumption Sectional Allowable Gauge No Resistance RGV4101 RGV4101 Electric starter modelRGV6101 RGV6101 Electric starter modelLively Blvd. Wood Dale, IL 60191 Phone 630-350-8200 Fax
Top Page Image Contents