Toyota Motor Europe Prius PHV Air Conditioning. Today Tomorrow Toyota Overview Items PRIUS Plug-in...

Toyota Motor Europe

Prius PHV

Air Conditioning

TodayTomorrowToyota

Overview

Items PRIUS Plug-in PRIUS

Heater Control Panel

Automatic A/C

A/C UnitSome of air is always re-circulated

Plasmacluster Generator (-A Only) —

Heater

SFA (Straight Flow Aluminum) -II Heater Core

PTC Heater165 W x 3 —

280 W x 3 —

Heat Pump System —

Electric Water Pump (for Heater and Engine Cooling)

Compressor

Scroll Type Compressor with Motor (A/C Inverter integrated)

ES14 —

ES27 —

Compressor Oil: ND-OIL11

: Available —: Not Available

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Overview

ItemsPRIUS Plug-

inPRIUS

Condenser MF-IV Sub-cool Condenserin Engine Compartment

in A/C Unit —

Evaporator ECS (Ejector Cycle System) Evaporator

Servo Motor Pulse Detection Type Servo Motor with Bus Connector

Blower Brushless Motor

Models with Solar Power Ventilation System

—

for All Models —

Clean Air Filter Pollen Removal Type

Sensor Humidity Sensor —

Refrigerant HFC134a

Control

Solar Ventilation System Control —

Remote Air Conditioning System Control

Cooling Operation

Heating Operation —

Eco Mode Control

: Available —: Not Available

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Heat Pump System

Plug-in Hybrid with Heat

Pump System

Plug-in Hybrid without Heat Pump System

Start GoalHeater ON

EV Driving

Engine is warmed-up only for the heating operation(It lowers fuel economy)

Engine is warmed-up only for the heating operation(It lowers fuel economy)

The heat pump system (electric energy) is used when the engine is cold

The heat pump system (electric energy) is used when the engine is cold

EV Driving

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Heat Pump SystemSystem Diagram

Engine

Compressor with Motor

Electric Water Pump A/C Unit

Heater Core

ECS Evaporator

Condenser

Condenser

Expansion Valve

High Pressure Magnetic Valve

Dehumidification Magnetic Valve

Heating 3-way Valve

Low Pressure Magnetic Valve

Heat Exchanger Shut Valve

Refrigerant Outlet Temp. Sensor

Refrigerant Inlet Temp. Sensor

Accumulator

Orifice

Air Mix Damper

E

C

C

H

A/C Pressure Sensor

M

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Heat Pump SystemParts location

A/C Unit (RHD Model)

Heater Core

ECS Evaporator

Condenser

PTC Heater

Blower Motor

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Heat Pump SystemParts location


CondenserHigh Pressure Magnetic Valve


Heating 3-way Valve

Low Pressure Magnetic ValveHeat

Exchanger Shut Valve


Refrigerant Inlet Temp. Sensor

Accumulator

Expansion Valve

A/C Pressure SensorA/C Unit

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Heat Pump SystemRefrigerant line (All)

E: EvaporatorC: CondenserH: Heater CoreM: Compressor with Motor

Condenser

A/C Unit

View from A

AEC

CHM ECCHM

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Heat Pump SystemRefrigerant line (1/3)

Heating 3-way Valve


A/C Pressure Sensor



ECCHM ECCHM

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High Pressure Magnetic Valve


Heat Exchanger Shut Valve

Expansion Valve


ECCHM ECCHM

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Low Pressure Magnetic Valve

Refrigerant Inlet Temp.

Sensor

Accumulator


ECCHM ECCHM

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Heat Pump SystemCooler cycle

A/C Unit

Open

Open

Close

OFF

Close

Cooled AirE

C

C

HEngine


M

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Heat Pump SystemHeat Pump Cycle

A/C Unit

Close

Close

ON

OpenOpen

Warmed Air

E

C

C

HEngine


M

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Heat Pump SystemHeat Pump Cycle (With dehumidification) [A]

A/C Unit

Close

Close

Open

ON

Close

E

C

C

HEngine


Warmed and Dehumidified

Air

M

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Heat Pump SystemHeat Pump Cycle (With dehumidification) [B]

A/C Unit

Close

Open

ON

OpenOpenWarmed and Dehumidified

Air

E

C

C

H


EngineM

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Heat Pump SystemHeating operation by engine coolant

A/C Unit

Open

Open

Close

OFF

Close

E

C

C

HEngine


Warmed Air

Electric Water Pump

M

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Heat Pump SystemHeat Pump Operating Conditions

Engine Coolant

Heat Pump

Heat Pump Cycle(with Dehumidification) [A]

Heat Pump Cycle(with Dehumidification) [B]

Heat Pump Cycle

with Dehumidification

Windshield glass is easy to fog up (with A/C switch

indicator ON)

•Windshield glass is hard to fog up

•A/C switch indicator is turned off by pressing A/C switch

2.5 °C (36.5 °F) or more

Less than 2.5 °C

(36.5 °F)

Evaporator temp.

•The heating performance by the current coolant temp. is higher than the target heating performance

•Front DEF switch is pressed (with windshield glass is easy to fog up)

•Temp. setting is MAX HOT•Ambient temp. is approx. –2 °C (28.4 °F) or less

•Frost is detected at the condenser (in the engine compartment)

The heating performance by the current coolant temp. is lower than

the target heating performance

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Heat Pump SystemAutomatic Defrosting Operation

A/C AmplifierRefrigerant Inlet Temp.

Sensor Signal

Start request

Approx. –15 °C (5 °F) or less continues for 30 sec. Approx. –15 °C (5 °F) or

less continues for 30 sec.

Judges that the condenser (in the engine

compartment) is frosted

Judges that the condenser (in the engine

compartment) is frosted

Engine

Warmed up

Heating operation is changed from heat pump

type to engine coolant type

Changes to cooler cycle in order to defrost the

condenser (for 20 min.)

Heating operation is changed from heat pump

type to engine coolant type

Changes to cooler cycle in order to defrost the

condenser (for 20 min.)

Cooler Cycle

Heat Pump Cycle

Required Flow Volume of the Electric Water

Pump

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Heat Pump SystemA/C switch indicator

A/C Switch Indicator

A/C System

Cooler Cycle Heat Pump Cycle

ON

Compressor ON Compressor ON

[with dehumidification][with dehumidification] (Automatically dehumidified

if necessary)

OFFCompressor OFF Compressor ON

[without dehumidification] [without dehumidification]

A/C Switch

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Heat Pump SystemHumidity Sensor

Humidity Sensor•Glass Humidity Sensor•Glass Temp. Sensor•Glass Surroundings Temp. Sensor

•Glass Humidity•Glass Temp.•Glass Surroundings Temp.

A/C Amplifier

Easiness of the windshield

glass fog up

•Energy loss reduced•Prevents windshield glass from fogging up

•Energy loss reduced•Prevents windshield glass from fogging up

Controls A/C system

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Heat Pump SystemHumidity sensor controls

Easiness of the windshield glass fog up

Air Inlet Mode Control

Air Outlet Mode Control

Airflow Volume Control

Increase REC Air

Increase FER Air

FRE 100%

FOOT/DFF Mode

Blower Level

+5

Keep REC/FRE ratio

+1

Normal Control

±0

Easy to fog upHard to fog up

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Remote Air Conditioning SystemActivation

Electric power supplied through the plug-in function

Press and Hold

Major Difference From PRIUS

Model PRIUS Plug-in PRIUS

Operation Cooling and Heating Cooling only

Operating Condition While plug-in charging While power mode OFF

Power Supply Supplied through the plug-in function HV Battery

Solar Ventilation System N.A. Equipped

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Remote Air Conditioning SystemSystem Diagram

Inverter Assembly

HV Battery (Sub 1, 2) Charger Relay

Remote Air Conditioning

Switch

Door Control Receiver

•Door Courtesy Light Switch•Door Lock Position Switch•Hood Courtesy Switch

V Bus V Bus No.1No.1

Power Power Management Management

BusBus

Certification ECU

•Power Switch•Shift Position Sensor•Stop Light Switch

HV Battery Assembly

Solar Sensor

Ambient Temp. Sensor

Room Temp. Sensor

Servo Motors

PTC Heater

Blower Motor

HV Battery (Main)

DC-DC Converter

IG1, IG2 Relays Compressor with Motor

A/C Amplifier

Main Body ECU

Power Management Control ECU

High-voltage High-voltage Wire HarnessWire HarnessBoost Converter (Sub)

Boost Converter (Main)

Battery Charger

Battery Charger Inlet

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Remote Air Conditioning SystemOperating Conditions

Operation Start Condition

Press and hold the remote air conditioning switch for 0.8 sec or more when all the following conditions are satisfied

Power mode is OFFPower switch is not pressedShift position is in PAll the doors are closed and lockedEngine hood is closedBrake pedal is not depressedTheft deterrent system is not in alarm stateWhile plug-in chargingCooling or heating operating conditions meet the set temperature

Operation Stop Condition [OR]

• When the operation start condition are not met• Approx. 30 min. have elapsed• When the remote air conditioning switch is pressed twice within 3 sec.

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Remote Air Conditioning SystemOperation

Heating Operation

Heat Pump(Heating Cycle)

Cooling Operation

Less than -2 °C (28.4 °F)

A/C system operates in accordance with the set temp.

Operation start conditions are satisfied

-2 °C (28.4 °F) or more

PTCHeater

Ambient Temp.

Maximally 3 PTC heaters (280 W x 3) are operated in accordance with the max. permissible power

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Air Conditioning SystemRefrigerant

Standard Refrigerant Amount

Refrigerant Amount

Point where bubbles disappear

OverchargedHigh

Pressure

100 g(3.53 oz.)

+/- 50 g(+/- 1.76 oz.)

PRIUS Plug-in: 670 g (23.6 oz.)

PRIUS: 470 g (16.6 oz.)

Toyota Motor Europe Prius PHV Air Conditioning. Today Tomorrow Toyota Overview Items PRIUS Plug-in...

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