ASEP Test Results

CVT & Hybrid Vehicles

GRB informal meeting #819-21 September 2007

JASIC

Test Vehicles

PMR

kW/t kW / rpm

Vehicle A M1 Gasolin(Turbo) 53 47 / 6000 CVT

Vehicle B M1 Gasolin 63 72 / 5600 CVT

Vehicle C M1 Gasolin 69 118 / 5500 CVT

Maximum powerVehicle Category Engine type Transmission

CVT

X20

100

X20

100

Nmax5086.4425086.442

0

1000

2000

3000

4000

5000

6000

20 30 40 50 60 70 80 90 100Vehicle speed(Vbb), km/ h

Engin

e spe

ed(N

bb), r

pm

D- rangeAnnex3(D)Nmax

60

65

70

75

80

85

0 1000 2000 3000 4000 5000 6000Engine speed(Nbb), rpm

Soun

d lev

el(Ac

c), dB

(A)

D- rangeAnnex3(D)Nmax

4.5dB/ 1000rpm

Test results for CVT vehicles (Vehicle A)

X20

100

X20

100

Nmax4533.514533.51

0

1000

2000

3000

4000

5000

6000

20 30 40 50 60 70 80 90 100Vehicle speed(Vbb), km/ h

Engin

e spe

ed(N

bb), r

pm

D-rangeAnnex3(D)Nmax

60

65

70

75

80

85

0 1000 2000 3000 4000 5000 6000Engine speed(Nbb), rpm

Soun

d lev

el(Ac

c), dB

(A)

D- rangeAnnex3(D)Nmax

8.2dB/ 1000rpm

Test results for CVT vehicles (Vehicle B)

X20

100

X20

100

Nmax4346.6294346.629

0

1000

2000

3000

4000

5000

6000

20 30 40 50 60 70 80 90 100Vehicle speed(Vbb), km/ h

Engin

e spe

ed(N

bb), r

pm

D- rangeAnnex3(D)Nmax

60

65

70

75

80

85

0 1000 2000 3000 4000 5000 6000Engine speed(Nbb), rpm

Soun

d lev

el(Ac

c), dB

(A)

D-rangeAnnex3(D)Nmax

6.9dB/ 1000rpm

Test results for CVT vehicles (Vehicle C)

Comments for CVT vehicles

(1) Annex3 test already covers almost the maximum engine speed in Annex10.

(2) In case of CVT vehicle, range of change for engine speed is small, even if different vehicle speeds are used.

(3) Therefore, CVT vehicles can be excepted for ASEP.

Test Vehicle

PMR

kW/t kW / rpm

6400

147kW

111

-

218 /

Transmission

Vehicle D M1 CVT

Vehicle Category Power-traintype

Maximum power

Engine(gasoline)

Motor

Hybrid Vehicles

Hybrid Systems (1)Series Hybrid System Parallel hybrid system

Since a series hybrid uses its engine to generate electricity for the motor to drive the wheels.The engine operation is independent of driver’s control.

A parallel hybrid uses the engine as the main power source, with the motor used only to provide assistance during acceleration.

Hybrid Systems (2)

Ratio of engine and motor operation in hybrid system

Series/Parallel hybrid system

In a series/parallel hybrid, a power split device divides the power from the engine, so the ratio of power going directly to the wheels and to the generator is continuously variable.

Vehicle D

X20

100

X20

100

Nmax4583.3554583.355

0

1000

2000

3000

4000

5000

6000

20 30 40 50 60 70 80 90 100Vehicle speed(Vbb), km/ h

Engin

e spe

ed(N

bb), r

pm

ASEP(D_Battery:Low)ASEP(D_Battery:High)Annex3(D_Battery:Low)Annex3(D_Battery:High)Nmax

60

65

70

75

80

85

0 1000 2000 3000 4000 5000 6000Engine speed(Nbb), rpm

Soun

d lev

el(Ac

c), dB

(A)

ASEP(D_Battery:Low)ASEP(D_Battery:High)Annex3(D_Battry:Low)Annex3(D_Battery:High)Nmax

3.4dB/ 1000rpm

Test results for a Hybrid vehicle

Comments for Hybrid vehicles

(1) Difference between sound level in different degrees of battery charge is small.

(2) When the engine operates, hybrid vehicles can be dealt with an internal combustion engine and a CVT vehicle. (Hybrid vehicles have CVT)

The proposed methods

(1) Germany/France　・ D/F-1: Anchor point => measured value　・ D/F-2: Anchor point => Annex3 limits(2) The Netherlands　・ NL-1 ： fixed acceleration rate of a_wot in Annex3　・ NL-2: measured acceleration rate at each point(3) OICA

Comparison of Proposed Methods

65

70

75

80

85

90

1000 2000 3000 4000 5000 6000

OIC A

65

70

75

80

85

90

1000 2000 3000 4000 5000 6000Engine speed(N_bb), rpm

Soun

d lev

el, dB

(A) ASEP

Annex3Limit

N_Lmax(max)49344934

N_bb(max)50865086

V_pp(max)7676

65

70

75

80

85

90

1000 2000 3000 4000 5000 6000Engine speed(N_Lmax), rpm

Soun

d lev

el, dB

(A)

ASEPAnnex3Limit(D/ F-1)Limit(D/ F-2)

65

70

75

80

85

90

0 10 20 30 40 50 60 70 80 90 100

D/F N_Lmax(max)49344934

N_bb(max)50865086

V_pp(max)7676

65

70

75

80

85

90

0 10 20 30 40 50 60 70 80 90 100Vehicle speed(V_pp), km/ h

Soun

d lev

el, dB

(A) ASEP

Annex3Limit(NL-1)Limit(NL-2)

NL

ASEP Test Results (Vehicle A: D-range)

Assumption;

Sound limit in Annex3 = 72dB(A)

R51/02: 69.4dB(A)

New Annex3; 66.9dB(A)

65

70

75

80

85

90

0 10 20 30 40 50 60 70 80 90 10065

70

75

80

85

90

1000 2000 3000 4000 5000 6000Engine speed(N_Lmax), rpm

Soun

d lev

el, dB

(A) ASEP

Annex3Limit(D/ F-1)Limit(D/ F-2)

D/F

65

70

75

80

85

90

0 10 20 30 40 50 60 70 80 90 100vehicle speed(V_pp), km/ h

Soun

d lev

el, dB

(A) ASEP

Annex3Limit(NL-1)Limit(NL-2)

NL

65

70

75

80

85

90

2000 3000 4000 5000

OIC A

65

70

75

80

85

90

1000 2000 3000 4000 5000 6000Engine speed(N_bb), rpm

Soun

d lev

el, dB

(A)

ASEP

Annex3

Limit

ASEP Test Results (Vehicle B: D-range)

R51/02: 69.5dB(A)

New Annex3; 67.4dB(A)

65

70

75

80

85

90

1000 2000 3000 4000 5000 6000Engine speed(N_Lmax), rpm

Soun

d lev

el, dB

(A)

ASEP

Annex3

Limit(D/ F-1)

Limit(D/ F-2)

65

70

75

80

85

90

20 30 40 50 60 70 80 90 100

ASEPAnnex3Limit(NL-1)Limit(NL-2)

D/F

65

70

75

80

85

90

2000 3000 4000 5000

OICA

65

70

75

80

85

90

1000 2000 3000 4000 5000 6000Engine speed(N_bb), rpm

Soun

d lev

el, dB

(A)

ASEPAnnex3Limit

65

70

75

80

85

90

0 10 20 30 40 50 60 70 80 90 100Vehicle speed(V_pp), km/ h

Soun

d lev

el, dB

(A) ASEP

Annex3Limit(NL-1)Limit(NL-2)

NL

ASEP Test Results (Vehicle C: D-range)

R51/02: 71.0dB(A)

New Annex3; 68.9dB(A)

D-range (battery : low)

65

70

75

80

85

90

1000 2000 3000 4000 5000 6000Engine speed(N_Lmax), rpm

Soun

d lev

el, dB

(A) ASEP

Annex3Limit(D/ F-1)Limit(D/ F-2)

65

70

75

80

85

90

0 10 20 30 40 50 60 70 80 90 100

D/F

65

70

75

80

85

90

1000 2000 3000 4000 5000 6000Engine speed(N_bb), rpm

Soun

d lev

el, dB

(A)

ASEPAnnex3Limit

65

70

75

80

85

90

2000 3000 4000 5000

OIC A

65

70

75

80

85

90

0 10 20 30 40 50 60 70 80 90 100Vehicle speed(V_pp), km/ h

Soun

d lev

el, dB

(A) ASEP

Annex3Limit(NL-1)Limit(NL-2)

NL

ASEP Test Results (Vehicle D Hybrid)

R51/02: 73.5dB(A)

New Annex3; 69.0dB(A)

Limit line Slope Parameter Method

Related to the limit of

Annex3

Related to the test data of Annex3

D/F (TUV)

D/F (UTAC)

OICA

NL

Engine speed

Indivi-dual slope

Fixed slope

Vehicle speed

Tyre

com

pens

atio

n

Tyre

Methods and components

Measurement uncertainty

Check of M/U

Components

Limit line Slope Parameter Method

Related to the limit of

Annex3

Related to the test data of Annex3

D/F (TUV)

D/F (UTAC)

OICA

NL

Engine speed

Indivi-dual slope

Fixed slope

Vehicle speed

Tyre

com

pens

atio

n

TyreMeasurement uncertainty

Check of M/U

Components

Methods and components

There are a lot of combinations of components for ASEP method. Each component should be discussed in order to decide a method.

Among them, most Japanese concerns are engine speed base and limit line related to the Annex3 limits.

Comments-1Comment -1

(Vehicle C : manual mode)

Comment -2(1)Tyre noise calculation is not necessary for one gear test.(2) Tyre noise calculation is not necessary at least for Annex3 limit base. There is no significant difference between with and without tyre noise calculation.

N_Lmax(max)49344934

N_bb(max)50865086

V_pp(max)7676

65

70

75

80

85

90

1000 2000 3000 4000 5000 6000Engine speed(N_Lmax), rpm

Soun

d lev

el, dB

(A)

ASEPAnnex3Limit(D/ F-1)Limit(D/ F-2)Limit(D/ F-1_without tyre calculation)Limit(D/ F-2_without tyre calculation)

65

70

75

80

85

90

1000 2000 3000 4000 5000 6000

Vehicle A : D-range

Vehicle A : manual mode

60

65

70

75

80

85

90

1000 2000 3000 4000 5000 6000Engine speed(N_Lmax), rpm

Soun

d lev

el, dB

(A)

ASEP(4th)ASEP(3rd)Annex3Limit_D/ F-2(4th)Limit_D/ F-2(3rd)Limit_D/ F-2(4th_without tyre calculationLimit_D/ F-2(3rd_without tyre calculation)

The influence of tyre noise calculation on D/F proposal

Vehicle A : manual mode

60

65

70

75

80

85

90

1000 2000 3000 4000 5000 6000Engine speed(N_Lmax), rpm

Soun

d lev

el, dB

(A)

ASEP(4th)ASEP(3rd)Annex3Limit_D/ F-1(4th)Limit_D/ F-1(3rd)Limit_D/ F-1(4th_without tyre calculation)LImit_D/ F-1(3rd_withouttyre calculation)

60

65

70

75

80

85

90

1000 2000 3000 4000 5000 6000

The influence of tyre noise calculation on D/F proposal

Both N_Lmax and N_bb can be used, since the correlation between N_Lmax and N_bb is good. Using N_bb is better due to simplify test equipments.

Vehicle A Vehicle B Vehicle C

X0

6000

0

1000

2000

3000

4000

5000

6000

0 1000 2000 3000 4000 5000 6000E ng ine s peed(N_L max), rpm

Eng

ine

spee

d(N

_bb)

, rpm

3rd2ndD-range

X0

6000

0

1000

2000

3000

4000

5000

6000

0 1000 2000 3000 4000 5000 6000E ng ine s peed(N_L max), rpm

Eng

ine

spee

d(N

_bb)

, rpm

4th3rdD-range

X0

6000

0

1000

2000

3000

4000

5000

6000

0 1000 2000 3000 4000 5000 6000E ng ine s peed(N_L max), rpm

Eng

ine

spee

d(N

_bb)

, rpm

3rd2ndD-range

Comment -3

• CVT Annex3 test already covers almost the maximum

engine speed in Annex10. • Hybrid Hybrid vehicles can be dealt with an internal

combustion engine.• Test method

- Should take the limit line according to Annex3 limit- Can skip tyre noise calculation at least on Annex3

limit base- Can use recorded engine speed at BB

Summary