節(jié)氣門體精講

f上海汽車集團(tuán)股份有限公司技術(shù)中心節(jié)氣門體SAIC

MOTOR

Technical

Center節(jié)氣門體在汽油機(jī)控制系統(tǒng)中的作用汽油機(jī)的工作是將燃油和空氣充分有效地按一定比例混合，通過定時(shí)點(diǎn)火燃燒爆炸，然后將爆炸產(chǎn)生的能量通過曲軸向外輸送，怎樣才能根據(jù)不斷變化的需求去組織燃燒，達(dá)到最佳的空氣燃油比例？節(jié)氣門體起到了一個(gè)重要的作用。首先根據(jù)來自油門踏板的位置提出了對(duì)發(fā)動(dòng)機(jī)的扭矩需求，然后ECU根據(jù)這個(gè)需求換算成以節(jié)氣門體的開度要求為表現(xiàn)形式的空氣進(jìn)氣量的要求；最后配之以為達(dá)到最佳燃燒效果的燃油供油量，達(dá)到最佳的動(dòng)力性、經(jīng)濟(jì)性和排放。The

role

of

throttle

body

in

gasoline

engine

control

systemGasoline

engine"s

job

is

to

fuel

and

air

mixed

in

certain

proportion,

efficiently

by

timingignition

burning

explosion,

and

thensend

the

blast

energy

through

the

crankshaft

to

the

outside,

how

can

according

tothe

changing

needs

to

organize

the

combustion,best

air

fuel

ratio?

Throttle

body

plays

a

important

role.First

of

all,

according

to

the

position

of

the

accelerator

pedal

is

put

forward

on

theengine

torque

requirements,then

converted

to

ECU

according

to

the

needs

to

the

opening

of

throttle

bodydemands

of

air

volume

in

the

form

of;The

final

match

of

the

thought

to

achieve

the

best

effect

of

combustion

of

fuel

oil,to

achieve

the

best

performance,

fuel

economy

and

emissionsf上海汽車集團(tuán)股份有限公司技術(shù)中心25/28/2020Carbon

canisterCamshaft

phaser*Fuel

rail/InjectorCanister

purgevalveAir

massAccelerator

pedal

moduleThrottledevice(ETC)KnocksensorDelivery

module

withlow

pressure

pumpOxygenSensor**MaincatalystCANDiagnosislampDiagnosisinterfaceImmobilizerIntake

manifoldsensorEGR-valve**

optionSource:

GS/VSA

64SpeedsensorPhasesenor

Oxygen

sensorPre

catalyst*Temp.sensorETC

Electronic

Throttle

ControlEOBD

European

On-Board

Diagnosis

SystemRLFS

Returnless

Fuel

Supply

SystemCamshaft

phaser:intake

and/orexhaust

phasing**

Reserve

for

EOBDAir

mass

meter

withIntake

air

temperatureElectroniccontrol

unit節(jié)氣門體系統(tǒng)原理圖(System

principle)SAIC

MOTOR

Technical

Centerf節(jié)氣門體上海汽車集團(tuán)股份有限公司技術(shù)中心SAIC

MOTOR

Technical

Center5/28/202031.電子節(jié)氣門體(Electronic

throttle

body)?工作原理：電子節(jié)氣門是電子節(jié)氣門控制系統(tǒng)的一個(gè)關(guān)鍵部件，它一方面執(zhí)行來自發(fā)動(dòng)機(jī)ECU的指令，調(diào)節(jié)節(jié)氣門開度來控制發(fā)動(dòng)機(jī)的進(jìn)氣量，從而實(shí)現(xiàn)控制發(fā)動(dòng)機(jī)的負(fù)荷輸出，同時(shí)可以輸出反映節(jié)氣門開度位置的信號(hào)，供控制系統(tǒng)監(jiān)控節(jié)氣門工作狀況。電子節(jié)氣門由節(jié)氣門體、驅(qū)動(dòng)電機(jī)和節(jié)氣門位置傳感器等構(gòu)成，來自發(fā)動(dòng)機(jī)ECU的指令使驅(qū)動(dòng)電機(jī)動(dòng)作，通過傳動(dòng)機(jī)構(gòu)使節(jié)氣門板轉(zhuǎn)動(dòng)，保證發(fā)動(dòng)機(jī)工作所需的節(jié)氣門開度。節(jié)氣門位置傳感器由兩個(gè)電位器組成，節(jié)氣門開度變化時(shí)，電阻值發(fā)生變化，輸出的電壓信號(hào)隨之變化，與電子油門踏板位置傳感器信號(hào)一起，輸入到發(fā)動(dòng)機(jī)ECU，經(jīng)計(jì)算后，輸出驅(qū)動(dòng)電機(jī)控制信號(hào)，從而控制發(fā)動(dòng)機(jī)節(jié)氣門開度。同發(fā)動(dòng)機(jī)控制系統(tǒng)一起，電子節(jié)氣門配合工作，可以實(shí)現(xiàn)：發(fā)動(dòng)機(jī)怠速控制，車輛巡航控制，Limphome控制，自動(dòng)變速箱控制，車身電子穩(wěn)定控制（ESP）等功能。Working

principle:

electronic

throttle

is

electronic

throttle

control

system

of

one

of

the

key

parts,

onthe

one

hand,

the

execution

of

the

instruction

from

the

engine

ECU,

adjust

the

opening

of

throttle

tocontrol

the

engine

into

the

air,

so

as

to

realize

control

of

the

load

on

the

engine

output,and

can

reflect

the

position

of

the

throttle

opening

signal

output,

working

condition

monitoring

throttlefor

control

system.Electronic

throttle

by

throttle

body,

drive

motor,

and

throttle

position

sensor,

etc,

from

the

engine

ECUinstructions

that

drive

motor

movement,

through

the

drive

mechanism

to

rotate

the

door

plank

of

solarterms,

to

ensure

that

the

engine

for

the

throttle

opening.

Throttleposition

sensor

is

composed

of

two

potentiometer,

change

the

throttle

opening,

and

the

resistance

valuechanges,

the

output

voltage

signal

changes,

together

with

the

electronic

accelerator

pedal

positionsensor

signal,

the

input

to

the

engine

ECU,

after

calculation,

output

drive

motor

control

signal,

so

as

tocontrol

the

engine

throttle

opening.Together

with

the

engine

control

system,

electronic

throttle

with

work,

can

be

achieved:

the

engine

idlespeed

control,

vehicle

cruise

control,

Limp

home

control,

automatic

transmission

control,

automobile

bodyelectronic

stability

control

(ESP),

etcf節(jié)氣門體上海汽車集團(tuán)股份有限公司技術(shù)中心SAIC

MOTOR

Technical

Center5/28/20204直流電機(jī)在驅(qū)動(dòng)電流作用下旋轉(zhuǎn)一定角度，通過齒輪傳動(dòng)機(jī)構(gòu)，將直流電機(jī)軸的運(yùn)動(dòng)傳遞給節(jié)氣門軸，節(jié)氣門軸帶動(dòng)節(jié)氣門旋轉(zhuǎn)到所需角度，改變進(jìn)氣通道的截面積，從而控制發(fā)動(dòng)機(jī)的進(jìn)氣流量。同時(shí)，由于節(jié)氣門軸的轉(zhuǎn)動(dòng)，改變電位計(jì)的工作位置，電位計(jì)輸出的信號(hào)發(fā)生變化，發(fā)動(dòng)機(jī)控制單元根據(jù)信號(hào)值可確定節(jié)氣門的具體開度位置反饋，從而精確微調(diào)其位置；電位計(jì)為兩個(gè)反向信號(hào)計(jì)組成，一個(gè)反映節(jié)氣門的正向開度位置，另一個(gè)反映節(jié)氣門的反向開度位置，比較兩個(gè)信號(hào)計(jì)的信號(hào)值可相互檢查其工作狀態(tài)，作為判斷是否有失效的一個(gè)依據(jù)。Dc

motor

rotation

Angle,

under

the

action

of

a

drive

current

through

a

gear

transmissionmechanism,

transfer

the

motion

of

the

dc

motor

shaft

to

the

throttle

shaft,throttle

shaft

drive

the

throttle

to

the

required

level,

changing

the

cross-sectional

areaof

inlet

channel,

to

control

the

inlet

flow

of

the

engine.

At

the

same

time,because

of

the

rotation

of

the

throttle

shaft,

change

the

working

positionpotentiometer,

potentiometer

output

signal

changes,

the

engine

control

unit

canbe

set

according

to

the

signal

value

of

the

opening

of

the

throttle

on

the

specificposition

feedback,

thus

precise

fine-tuning

its

position;Potentiometer

to

two

reverse

signals

of

meter,

a

positive

reflect

the

throttle

openingposition,

another

reflection

of

the

opening

of

the

throttlereverse

position,

compare

the

two

signals

of

value

can

check

the

working

state

of

eachother,

as

a

basis

for

judging

whether

there

is

a

failure.f節(jié)氣門體上海汽車集團(tuán)股份有限公司技術(shù)中心SAIC

MOTOR

Technical

Center5/28/20205外形及內(nèi)部結(jié)構(gòu)f節(jié)氣門體上海汽車集團(tuán)股份有限公司技術(shù)中心SAIC

MOTOR

Technical

Center5/28/20206f節(jié)氣門體上海汽車集團(tuán)股份有限公司技術(shù)中心SAIC

MOTOR

Technical

Center5/28/20207f節(jié)氣門體上海汽車集團(tuán)股份有限公司技術(shù)中心SAIC

MOTOR

Technical

Center5/28/20208f節(jié)氣門體上海汽車集團(tuán)股份有限公司技術(shù)中心SAIC

MOTOR

Technical

Center5/28/20209二條輸出信號(hào)線f節(jié)氣門體上海汽車集團(tuán)股份有限公司技術(shù)中心SAIC

MOTOR

Technical

Center5/28/202010f節(jié)氣門體上海汽車集團(tuán)股份有限公司技術(shù)中心SAIC

MOTOR

Technical

Center5/28/202011接插件定義及功能f上海汽車集團(tuán)股份有限公司技術(shù)中心12SAIC

MOTOR

Technical

Center線性度（對(duì)應(yīng)點(diǎn)）：±2%機(jī)械最大值UMA，100%/105°電感：節(jié)氣門體電機(jī)及機(jī)械傳動(dòng)部分的特性傳動(dòng)比：20：1直流電機(jī)的轉(zhuǎn)動(dòng)慣量：常溫下電機(jī)扭矩：直流電機(jī)電阻：40gcm21.7Nm1.5Ω±0.3Ω0.9mH±0.1mH無負(fù)載電流：＜0.8A無負(fù)載轉(zhuǎn)速：4500rpm210Nm9.5A鎖止扭矩：鎖止電流：212F時(shí)的最大恒定電流（有效值）：＜2.5A＜1.5A名義電流（無負(fù)載）平均值：電位計(jì)供電：

5V±0.2V電阻：1.25kΩ±30%工作電流：10μA（5/28/20E20CU內(nèi)帶電阻）f節(jié)氣門體上海汽車集團(tuán)股份有限公司技術(shù)中心SAIC

MOTOR

Technical

Center5/28/202013不同喉口直徑對(duì)應(yīng)的最小流量和參考的怠速流量（壓差：60kPa±2.5kPa,25℃）f節(jié)氣門體上海汽車集團(tuán)股份有限公司技術(shù)中心SAIC

MOTOR

Technical

Center5/28/202014響應(yīng)時(shí)間電機(jī)斷電后的回位時(shí)間f節(jié)氣門體上海汽車集團(tuán)股份有限公司技術(shù)中心SAIC

MOTOR

Technical

Center5/28/202015性能檢測(cè)：

在線測(cè)試可選擇以下六個(gè)位置檢測(cè)其傳感器輸出電壓的百分比：關(guān)死位置----最小機(jī)械停止位；自由狀態(tài)----安全狀態(tài)；40%的開度；64%的開度；88%的開度；全開位置----最大機(jī)械停止位。終檢可選擇以下二點(diǎn)：關(guān)死位置----最小機(jī)械停止位；自由狀態(tài)----安全狀態(tài)。f節(jié)氣門體上海汽車集團(tuán)股份有限公司技術(shù)中心SAIC

MOTOR

Technical

Center5/28/202016關(guān)鍵尺寸檢測(cè)：安裝平面的平面度；安裝孔之間的孔距、孔徑；喉口直徑；出氣孔外徑及凹槽尺寸；門板轉(zhuǎn)動(dòng)的靈活性；對(duì)外密封性；f節(jié)氣門體上海汽車集團(tuán)股份有限公司技術(shù)中心SAIC

MOTOR

Technical

Center