Toyota Motor Corporation Chief Engineer Product Planning...

Toyota Media Tour 2015 Tokyo Motor Show

Toyota Motor CorporationChief Engineer / Product Planning Div.

Koji Toyoshima


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FirstGeneration

SecondGeneration

ThirdGeneration

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Four great things about the new

1. Eye-catching design

4 . Well-equipped

2. Fun to drive

3. Excellent fuel economy

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Length: 4,540mm (+60mm)

Width: 1,760mm (+15mm)

Wheelbase: 2,700mm

Height:1,470mm(-20mm)

Luggage Space:502 (+56)

Hip point heightlowered by 59mm

Luggage compartment floor lowered by 110mm

Rear spoiler height lowered by 55 m

Height of powertrain components lowered by 10mm

Height lowered by 20mm

Cowl heightlowered by 62mm

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Toyota Media Tour 2015 Tokyo Motor Show1. Design

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Toyota Media Tour 2015 Tokyo Motor Show2. Basic Performance

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Distribution of frontal crash energy via multi-load paths

Bumper reinforcement

Point of impact

#2 cross-member

Distribution of energy Point of impact

Distribution of energy

2. Basic Performance

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Completely Redesigned Body Frame Structure

Squared reinforced annular structure

Rear annular structure


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Increased use of Hot Stamped Parts


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Increased use of Laser Screw Welding (LSW)Number of welding points increased by 30%


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Expanded use of high tensile strength steel sheetsNew rigid frame structure

Body torsional stiffness improved by approximately 60%


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Double wishbone rear suspension


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Noise absorption and insulation material in the engine

compartmentNoise absorption and

insulation materialSound insulating material

Sound absorbing and insulating material

Heavy Sheet

Film

Soft Layer

Heavy Sheet

FilmSoft Layer

Hard Layer

2.Basic Performance

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Current Prius

Floor silencer

NewPrius

Body sealer

Sections where sealer is now usedCurrent Prius


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New hybrid effect

Low fuel consumption Hybrid system

Emotional driving

experience

3. Hybrid System

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High efficiency Compact and lightweight system

Excellent environmental performance

3. Hybrid System

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Fuel Efficiency Gains Achieved with the New Hybrid System

Current Prius

New Prius

5.0%

Engine

2.6%

Transaxle

3.2%

Motor

2.4%

PCU

5.0%

Hybrid batteryHybrid system management

Vehicle

Fuel

cons

umpt

ion

mea

sure

d us

ing

The

Japa

nese

JC0

8 cy

cle

(km/ )

40km/Target

3. Hybrid System

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(%)

Improvements to maximum thermal efficiency of engines over time

First generation

Prius1NZ-FXE

(Year)1995 2000 2005 20152010

45

40

35

30

:Toyota gasoline engines : Competitors’ gasoline engines

Max

imum

ther

mal

eff

icie

ncy

Second generation

Prius1NZ-FXE

38.5%

Current Prius2ZR-FXE

New Prius2ZR-FXE

40%

3. Hybrid System

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Maximum Thermal Efficiency of 2ZR-FXE Engine: 40%

Reduced friction

Toyota-first dual cooling system

Improved combustion and knock control

3. Hybrid System

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New Multi-Axis TransaxlePower split device

Motor

Parallel motor reduction gear format

Generator

Mechanical loss reduced by approx. 20%

Length reduced by 47mm

3. Hybrid System

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Loss reduced by over 20%Weight reduced by over 20%

Compact and Lightweight High-Output Motor

Development of rolling-coil structure

3. Hybrid System

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Newly Developed PCU

Loss reduced by approx. 20%Size reduced by 33%

Auxiliary battery moved to engine compartment

Engine

PCU

Auxiliary battery

Upper cover

Inverter case

Smoothing capacitor

Converter case

Lower cover

Control circuit

Current sensor

Power stack(cooler and powercards)

Reactor

DC/DCconverter

3. Hybrid System

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Toyota Media Tour 2015 Tokyo Motor Show3. Hybrid System

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Newly Developed Nickel-Metal Hydride and Lithium-Ion Battery

Nickel-Metal Hydride Lithium-Ion

Improved output

*Lithium-ion battery availability depends on each market


00.20.40.60.8

11.21.4

Newly Developed Nickel-Metal Hydride Battery

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Size reduced by 10% Charging performance improved by 28%

10%

35.539.4 1.281.00

28%

Current Prius New Prius Current Prius New Pius

Note: assuming a battery temperature of 25°C

Bat

tery

vo

lum

e

( )

Am

ount

cha

rged

per

uni

t of t

ime

3. Hybrid System

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Relocated Battery

+110mm

-55mm

Luggage area502 (+56 )

Battery

Current Prius New Prius

Luggage area capacity

56increased by

NiMH & Li-ion

3. Hybrid System

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Toyota Media Tour 2015 Tokyo Motor Show3. Hybrid System

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Higher Engine Stop Speed

Vehicle speed

(km/h)

Time

(rpm)

Higher frequency of engine stops

Engine speed


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3. Hybrid System


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3. Hybrid System


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3. Hybrid System


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3. Hybrid System


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3. Hybrid System

Toyota Media Tour 2015 Tokyo Motor Show4. Advanced Equipment

Toyota Safety Sense P(on Japan models)

Pre-collision system withpedestrian detection

Lane departure alert

Radar cruise control

Automatic high beams

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Toyota Motor Corporation Chief Engineer Product Planning...

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