hybrid vehicles system ja501

Download Hybrid Vehicles system ja501

Post on 06-Feb-2016

7 views

Category:

Documents

0 download

Embed Size (px)

DESCRIPTION

nota

TRANSCRIPT

  • WHAT IS A HYBRID VEHICLE?Any vehicle which combines two or more sources of power.

    Examples:Diesel electricNuclear electricGasoline - electric*

  • HYBRID STRUCTUREThe two power sources found in hybrid vehicles may be combined in different ways, either in parallel or series

    Either one will allow the gasoline engine to shut down when it is not needed.*

  • Basic ComponentsPower plant ICEElectric motor / GeneratorBattery TransmissionInverter

  • TYPES OF HYBRID VEHICLESSeries hybrid Vehicle propulsion is by a electric motor onlyICE is used for charging the HV battery

  • TYPES OF HYBRID VEHICLESParallel hybridUses multiple propulsion energy sourcesThis means the electric motor and ICE propels the vehicle

  • TYPES OF HYBRID VEHICLESSeries-parallel hybridThese vehicles can operate using the electric motor alone or with assist of the ICEThey combine both functions of series and parallel design

  • HIGH VOLTAGE ELECTRICAL SYSTEMSPower for the electric motor is supplied by high-voltage nickel-metal hydride batteryBatteries for all hybrids are produced by Panasonic EV Energy in JapanVoltage ranges from 144 volts to 650 volts of DC current

    *

  • HIGH VOLTAGE ELECTRICAL SYSTEMSHigh voltage wiring may color coded orange, bright blue or even yellow

    Batteries vary in design, however, all incorporate individual cells connected to one another*

  • HIGH VOLTAGE ELECTRICAL SYSTEMS*

  • BATTERIESIndividual cells originally contained liquid potassium hydroxideThe liquid is almost totally absorbed by the paper membranes inside each cell of the batteryBecause the liquid is absorbed these batteries are considered dry cell batteries*

  • BATTERIES*

  • HIGH VOLTAGE ELECTRICAL SYSTEMSBatteries are usually located in the rear of the vehicle under the floor of the trunk or under the rear seat.The wiring harness from the batteries usually runs below the floorpan of the vehicle about one foot in from the drivers side of the vehicle.*

  • HIGH VOLTAGE ELECTRICAL SYSTEMS*

  • BATTERY RECHARGINGThe Ni-MH batteries are recharged through a process call regenerative brakingRegenerative braking takes energy from the forward momentum of the vehicle and captures it while coasting or braking.Occasionally batteries are recharged by the electric motor*

  • THE SILENT HYBRIDMost gasoline engines in hybrids will shut off when not needed i.e. when stopped in trafficMost hybrids have an indicator light which may alert individuals to the status of the vehicle*

  • THE SILENT HYBRIDWhen the vehicle is in this silent mode it may awaken without notice

    Chocking the wheels is critical to responder safety*

  • EMERGENCY PROCEDURESFIRESVehicle fires can be handled following normal vehicle firefighting proceduresCrews should not be shocked, even if flames are impinging on the battery pack itselfVirtually all fires involving Ni-MH batteries can be controlled with water

    *

  • EMERGENCY PROCEDURESNi MH BATTERY PACK PHYSICAL DAMAGEHigh-voltage circuits are color-coded either orange, bright blue or yellowNever disassemble or remove the metal cover of the high-voltage battery packDC current is normally isolated from any contact with the vehicle itself theoretically in order to receive a shock you would have to physically contact two separate points within the high-voltage system at the same time*

  • EMERGENCY PROCEDURESNi MH BATTERY PACK PHYSICAL DAMAGEIf the high-voltage cables running under the vehicle were damaged the high-voltage battery is designed short circuit.This short circuit would de-energize the entire high-voltage battery circuit

    *

  • HYBRID VEHICLE VS REGULAR VEHICLEAdvantages Better mileage Improved acceleration (most of the time)Less dependence on fossil fuelsLower emissionsSome states provide incentives for driving a hybridGreat driving experience

    DisadvantagesLittle highway mileage increaseHigh initial costNeeds high fuel cost to be worthwhileCould cost more to repairExtra maintenance itemsSome hybrids need special tires