动力总成及环保技术-ct先进汽油机-iee

机停缸技术研究THE

RESEARCH

OF

CYLINDERDEACTIVATION

TECHNOLOGY

ONGASOLINE

ENGINEJinqiang

Ma吉利动力总成Geely

Powertrain

Research

Institute/Mobile：电子邮件/ :

ma

项目背景/PROJECT

BACKGROUND1仿真计算/CAE2试验测试/TEST3结论/CONCLUSIONS4趋势/Regulations

Trends当前技术路线/Current

Technical

Route停缸技术方案/CDA

TechnicalProject项目背景/PROJECT

BACKGROUND油耗 趋势/Fuel

Consumption

Standard

Trends乘用车燃油限值呈逐年加严趋势，根据国家发布的《节能与新能源汽车技术路线图》，乘用车新车平均油耗将分别达到2020年5.0L/100Km，2025年4.0L/100Km，2030年3.2L/100Km。The

fuel

consumption

standard

is

increasingly

strict

，Figure

as

below

shows

the

fuel

consumption is

5.0L/100KM@2020，4.0L/100KM@2025

,

3.2L/100KM@2030

that

vehicle

lightweight

isconsidered.4.003.002.005.006.007.0010.009.008.007508509501050115012501350145015501650175018501950205021502250235024502550201620172018201920202025

值2030

值车重：KgVehicle

Weight

:

Kg燃油消耗量L/100KmFuel

Consumption

L/100Km*DATA

FROM

AVL

@AVL

PC

ELE

TECH

DAY

2017油耗 趋势/Fuel

Consumption

Standard

Trends当前技术路线/Current

Technical

Route小型化（down

sizing）、downspeeding、降摩擦（low-friction）、混动（hybrid）、BSG、

STT、能量回收CVVL、停缸(CDA)、排气废热利用2015年2020年2025年空气管理Air

control发

概念Engine

concept燃烧combustion电子增压器(e-turbo）、两级增压（twostageturbocharging）米勒循环(Miller）、深度 循环(Deep-miller）、冷却EGR、侧置/中置DI

FP≤200bar

侧置/中置

DI

FP（燃油压力）≥200bar稀薄燃烧、 压燃(HCCI/CAI)5L/100km

4L/100km发 与变速器深度集成、High

CR、VCR油耗目标Fuelconsumption停缸技术方案/CDA

Technical

Project功能要求Function

Requirement切换转速Switching

speed1200rpm～3000rpm切换油压Switching

oil

pressure＞1.5bar切换周期Switching

period一个循环Onecycle~停缸技术方案/CDA

Technical

Project停缸机构系统构造CDA

System

ConstructionThere

are

two

OCV

and

four

SRFF

to

make

surethe

switchingfunctionThe

cam

lobe

ofcylinder

2th

and3th

is

redesignedwhich

has

3

lobeseach

valveRedesign

the

oilgallery

of

cylinderhead停缸技术方案/CDA

Technical

Project进气侧INTAKE缸盖主油道进油口

MAIN

OIL

GALLERY

TOCYLINDER

HEAD排气侧EXHAUST停缸技术方案/CDA

Technical

Project缸盖油路设计Oil

Gallery

OfCylinder

Head仿真计算/CAE气门阀系动力学计算/Valvetrain

System

Kinematic

Calculation凸轮轴轴承盖强度计算/Camshaft

Bearing

Cover

Strength

Calculation一维润滑系统计算/1D

Lubrication

System

ysis一维性能及油耗计算/1D

Performance

And

Fuel

Consumption

ysis气门阀系动力学计算/Valvetrain

System

Kinematic

Calculation优化弹簧结构和力值Optimize

The

Valve

Spring

Structure

And

Force优化进气门升程Optimize

The

Intake

Valve

Lift经过优化，气门机构动力学满足设计要求，气门升程也与原机状态一致After

the

optimization，The

valvetrain

system

satisfy

all

therequirements

.凸轮轴轴承盖强度计算/Camshaft

Bearing

Cover

Strength

CALCULATION为了避让摇臂，

降低了凸轮轴承盖的宽度，所以进行了强度分析，分析结果显示满足使用要求。To

avoid

the

SRFF，we

reduced

the

width

of

camshaft

bearing

cover

,so

we

did

someyzation

to

make

sure

the

modification

satisfy

the

use

requirement

.一维润滑系统计算/1D

LubricationSystemysis泵后及油道机油压力对比分析After

Pump

An l

Gallery

Pressure

Contrastive

ysis增压器机油压力对比分析Oil

Pressure

Of

The

TurboContrastiveysis一维润滑系统计算/1D

LubricationSystemysis缸盖末端机油压力对比Of

The

Cylinder

Head

ContrastiveOil

Pressure

Atysis一维润滑系统计算/1D

LubricationSystemysis83.3

84.479.887.212211913101001502502003503001000

1500

1750

2000

2500

3000

3500

4000

4500

5000

5500full‐load

torqueoriginal

engineCDA

engineN.mrpmCDA

mode99.3两缸和四缸状态的全负荷扭矩The

Full

Load

Torque

For

Two

Cylinder

And

Four

Cylinder

State一维性能及油耗计算/1D

Performance

And

Fuel

Consumptionysis3873322562942771501005002503372003002763504504002357

original

engine279CDA

engine2000rpm下两缸和四缸状态的油耗2000rpm

Fuel

Consumption

For

Two

Cylinder

And

Four

Cylinder

State一维性能及油耗计算/1D

Performance

And

Fuel

Consumptionysis停缸系统切换试验/SYSTEM

SWITCHING

TEST耐久测试/DURABILITY发 油耗和性能/ENGINE

FUEL

CONSUMPTION

AND

PERFORMANCE试验测试/TEST停缸系统切换试验/SYSTEM

SWITCHING

TEST摇臂锁销响应测试试验原理The

Principle

Of

The

Test

Of

Rocker

Lock

Pin

Response停缸系统切换试验/SYSTEM

SWITCHING

TEST结论：1、机油压力恒定时，机油温度越高，锁销

与锁止动作时间越短2、当机油压力大于2bar后，其对锁销动作时间影响较小Conclusion：1、when

the

oil

pressure

is

constant，with

the

increasing

of

oil

temperature

the

pin

lock

and

unlock

time

is

shorter;2、when

the

oil

pressure

is

higher

than

2bar，it

has

less

influence

on

the

pin

switching

time.停缸系统切换试验/SYSTEM

SWITCHING

TESTEngine

speed凸轮轴转速Camspeed主油道温度Oil

gallerytemperature试验控制油压Oil

pressure锁销

动作时间Unlock

time锁销锁止动作时间Lock

time系统响应时间system

responsetime一个循环时间One

cycle

timer/minr/min℃kPamsmsmsms120062592.5915027.612.248.4096.00150075092.1120012.512.132.9080.00175087590.5320012.512.132.9068.572000100090.9520012.512.132.9060.002250112591.1625011.812.129.3053.332500125092.123009.511127.8048.002750137592.183009.511127.8043.643000150091.133508.710.827.8040.003250162591.183508.710.827.7036.923500175091.513508.710.827.7034.29停缸全工作转速范围内，锁销动作时间均满足一个周期切换要求During

all

theswitching

speed，lockpin

response

time

satisfied

the

requirement

of

finishing

switching

within

one

cycle耐久测试/DURABILITY切换耐久试验Switching

Durability配气机构动力学测试台架Valve

train

system

dynamic

test

bench发

转速Engine

speed3500rpm3500rpm切换次数Switching

times235万次2.35million次数False

times5次5

times率False

rate2.13ppm2.13ppm发 台架测试/ENGINE

TEST

BENCH

TEST发

油耗收益Engine

FuelConsumptionbenefitEngine

Fuel

Consumptionbenefit2000rpm油耗数据Fuel-efficient

MAP

figure

at2000rpm565.000244

380.3479

277.045929461.034698330.960663320.774384283.650391291.567078269.503815270.1707761.012.003.034.015.040.0100.0200.0300.0400.0500.0600.0g/Kwh、bar4_cylinder_BSFC2_cylinder_BSFC发 台架测试/ENGINE

TEST

BENCH

TEST发

油耗收益发 台架测试/ENGINE

TEST

BENCH

TEST发

油耗收益Engine

Fuel

Consumptionbenefit8.357.98发 台架测试/ENGINE

TEST

BENCH

TEST发

油耗收益Engine

Fuel

ConsumptionBenefit8.387.87OriginalModeCDA

ModeCDA

Mode发 台架测试/ENGINE

TEST

BENCH

TEST切换测试Switching

Test发 台架测试/ENGINE

TEST

BENCH

TEST2000rpm发

主要排放物测试Emission

Of

The

Engine

At

2000

rpm/Min发 台架测试/ENGINE

TEST

BENCH

TEST2000rpm时发

燃烧情况Combustion

Condition

Of

The

Engine

At

2000

rpm/Min结论/CONCLUSIONS在4

~

5bar负荷以下停缸技术能有效降低燃油消耗，在2000rpm@1bar油耗收益率能达到18.4%Cylinder

deactivation

can

effectively

reduce

the

fuel

consumption

under

4

~

5

bar,

and

the

fuel‐benefitrate

reached

to

18.40%

at

2000rpm@

1bar.相比4缸状态小负荷下停缸技术应用能增大点火提前角，以获得更佳的油耗收益The

ignition

advance

angle

is

more

aheadcompa