APM Accessory Power Module
Contains a power supply which interfaces with the auxiliary battery to
energize various accessory systems in the EV1. (Housed in PEB)
AC Alternating Current
An electric current that periodically reverses its direction of
current. This reversal usually takes place 60 times (60 cycles) per
second in household current in the U.S.
ABS Anti-lock Braking System
Eliminates brake lock-up during panic or emergency stops.
ACSP Authorized Charger Service Provider
Provides the infrastructure and equipment to install and service EV1's
inductive chargers. In California, Clean Fuel Connection, Inc. (CFCI) is the ACSP. In Arizona, it is EV Power.
An interconnected group of cells or batteries treated as a single unit.
EV1's battery pack contains 26 modules.
BPM Battery Pack Monitor
Monitors state of charge, temperature and other vital battery readings.
Communicates with charger to facilitate charging. (Attached to front of
BTCM Brake and Traction Control Module
Controls the braking, ABS, traction control, tire pressure monitoring
system, and regenerative braking features of the vehicle. (Housed in
CCM Convenience Charge Module
The 110-volt charger provided in the trunk of the lead acid EV1.
CP Charge Port
Located at the nose of EV1, it is where the paddle is inserted to
commence inductive charging.
The empty weight of a vehicle, including batteries but excluding
occupants and cargo.
DC Direct Current
Electricity that flows in only one direction; this is the type of
current that flows from a storage battery.
DSCM Display, Steering & Chime Module
Instrument cluster that presents information on state of charge, range
remaining, speed, odometer, instantaneous energy consumption and provides
intelligence to the power steering system (EHPS) and also communicates
with the RSA.
EV Electric Vehicle
Typically, a vehicle powered by batteries and electric motor(s),
qualified as a zero-emission vehicle.
EVS EV Specialist
EV1 marketing area specialists that coordinate the leasing of EV1's,
working with customers, Saturn retailers, and the local ACSP.
EHPS Electro-Hydraulic Power Steering
Motor-driven, variable assist power steering system that provides more
assistance at lower speeds, and less at higher speeds. The system
includes a unique energy-saving feature, meaning it is programmed to
only run as required, reducing energy by as much as 65% compared to a
conventional hydraulic system. (Housed in PEB)
FMVSS Federal Motor Vehicle Safety Standard (U.S.)
Safety standards that all new production vehicles must meet prior to
HTCM Heating and Temperature Control Module
Manages heating, ventilating, and air conditioning.
HVAC Heating, Ventilating and Air Conditioning
In EV1, this is controlled by the HTCM and heating or cooling is provided by the electric heat pump system.
IGBT Insulated Gate Bipolar Transistor
Converts DC voltage into 3-phase AC voltage to power EV1's
motor. (Housed in PEB)
Internal Combustion Engine
A device that converts AC electricity in DC electricity. Electric
cars that have DC motors do not need an inverter; EV's using AC motors
need the inverter to change the DC electricity from the batteries into
AC for the motor. (Also see PIM, IGBT)
The international unit to measure power (not only electrical), a
kilowatt is one thousand watts. One kW equals 1.34 horsepower; 746
watts equals 1 horsepower.
A kilowatt-hour is a unit of electrical energy or work, equal to that
accomplished by one kilowatt acting for one hour.
PEB Power Electronics Bay
Houses major electronics such as PIM, APM, PCM, and IGBT. (The big box under the hood)
PIM Power Inverter Module
Controls the conversion of AC power to DC power and back again, working
with IGBT and PCM. (Housed in PEB)
PCM Propulsion Control Module
Controls the energy flow to the motor during propulsion and regenerative
braking. Works with APM, BTCM, PIM, and IGBT. (Housed in PEB)
A means to recover energy when slowing or stopping an electric vehicle.
On cars equipped with such a system, when the brake pedal is pressed,
the electric motor acts as a generator and sends a small amount of
electricity back into the batteries.
RRIM Reinforced Reaction-Injection Molded
Compound utilized for front and rear fascias, front fenders, rear
quarter panels, rocker panels and rear wheel skirts.
SMC Sheet Molding Compound
Fiberglass-reinforced-resin sheet molding compound that make up the
hood, doors, roof and decklid.
Short/Long Arm Suspension
SDM (Supplemental Inflatable Restraint Control Module)
Monitors sudden changes in acceleration and other factors necessary to trigger air bag inflation.
SCM Standard Charge Module
220 volt floor and wall mount chargers
SOC State of Charge (of battery pack)
Usually expressed as a percentage, it is the ratio of the energy remaining in the battery pack as compared to the energy in a fully charged pack.
SRIM Structural Reaction-Injection Molded
Polyurethane compound that makes up the belly pan
SIR Supplemental Inflatable Restraint
Air bag system
VRLA Batteries Valve-Regulated Lead-Acid
EV1's specially designed, sealed, 12-volt batteries. The
valve-regulated designation refers to a one-way/pressure valve which
permits small quantities of gas to escape from the battery during the
vehicle's operation. These gasses are collected and vented safely under
Vehicle Identification Number
A unit of electromotive force. One volt equals 1 watt per ampere.
ZEV Zero emission Vehicle
A vehicle certified (by the state) to emit no pollutants into the atmosphere.
Copyright 2001 General Motors Corporation. All rights reserved.