1 I-Business Convention 2008 Confidential | AA/MKC | 23-25/04/2008 | © Robert Bosch GmbH 2008. All...

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I-Business Convention 2008

Confidential | AA/MKC | 23-25/04/2008 | © Robert Bosch GmbH 2008. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

We Focus – I-Business

Automotive Aftermarket

CNG / LPG

Klaus May

AA/MKG1

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Market analysis

LPG System overview

CNG Components

CNG System overview

LPG Components

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CNG System

Carbon canister

CAN

Electroniccontrol unit

Diagnosticinterface

Diagnostic lamp

Air mass sensor

Speed sensor

Phase sensor

Ignition coil/spark plug

Temperature sensor

Knock sensor

Tank vent valve

Throttlingdevice (EGAS)

CNG-rail/-injector

internal CNG-tank valve

Fuel pump module

Lambda sensor

Main catalytic converter

Camshaft phaser **

Tank filler neckgasoline / CNG

CNG-pressureregulator *

Acceleratorpedal module

Fuel rail/-injector

Exhaust gasrecoil valve

Preliminary catalytic converter

Immobilizer

Pressuresensor

Lambda sensor

Bif

uel-

EC

U

CNG-pressure-/temp. sensor

CNG tank 200 bar

Bosch-standard-components

CNG-specific components

* Consisting of pressure regulator, pressure sensor, pressure relief valve, shut off valve,

** Optional

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Advantages for costumer

No software changes for existing OE applications needed (but every valve has to be changed)

Suitable for use in regions with oil free Natural Gas Warranty for Bosch approved applications of Gas engines Enables small packaging and weight reduction Standard driver stage (high resistance coil) Flow rates suitable for passenger cars (up to 2,0l, 4 cyl.)

Electro magnetic injector specific designed for Natural Gas (CNG) Injection

Capable for oil free CNG Adapted to the needs of modern CNG engines Small and light, weight approx. 25 g Only suitable for use with CNG (hydrogen may be possible)

NGI2-CP Characteristics of NGI2-CP as replacement for EV1.3-CNG

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CNG Pressure Regulator

Features

Reduction of tank pressure to injection pressure level for all vehicle operating conditions

Solenoid-actuated shutoff-valve Integrated high-pressure sensor and pressure

relief valve

Customer Benefits

Designed and realised for automotive-applications

Certification complying to ECE-R110 Suitablefor for on-board diagnostic

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Features

Same basic functionality as external tank valve,but integrated into tank

Solenoid-actuated shutoff-valve(normally closed, accessible from the outside)

Safety components and certification as required by legislation (ECE-R 110)

Optional temperature sensor

Internal Tank Valve

Customer Benefits

Crash worthiness / safety enhancement by reduced leakage probability after crash impact

Reduction of outer height / less mounting space(packaging and tank volume advantage)

Reduction of flow noise (e.g. during tank filling)

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Features

Steel membrane with thin layer strain gauge

Hermetically-sealed electronic Optional integrated temperature sensor

(only low pressure)

Pressure Sensors

High Pressure Sensor DS-HD-KV4

Low Pressure Sensor DS-K-TF

Customer Benefits

Designed and realised for automotive-applications

Compact, high robustness Certificated to ECE-R110 Suitable for on-board diagnostics (EOBD)

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Features

Designed for gas applications Made of stainless steel

Customer Benefits

Designed and realised on customer request

Compact, high robustness Interface rail and valve already checked Certificated to ECE-R110

CNG Fuel Rail Assembly

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Bifuel ECU (customer specific)

Features

Functionality gasoline/gas operation Power Stages for gas injectors 8 I/O for 2 pressure-, 2 temperature

sensors,2 shutoff valves, operating mode, tank-levelCustomer Benefits

Compact and high reliability (versus 2 ECU concepts)

Better packing/reduced wiring harness Integrated diagnostic concept (EOBD) Functions as turbo and EGR integratable

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Market analysis

LPG System overview

CNG Components

CNG System overview

LPG Components

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1

2

13

8

73

65

4

12

11

10

9

14

LPG System1. Engine control unit

(ECU)2. Gas control unit (ECU)3. LPG tank with

multivalve4. Filling connection5. Shut-off valve 6. Evaporator/pressure

regulator7. Filter8. pressure sensor9. Gas injector10. Gas rail11. Gasoline injection

valve12. Lambda sensor B113. Selector switch gas-

gasoline operation14. Diagnosis/adaptation/

calibration

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Market analysis

LPG System overview

CNG Components

CNG System overview

LPG Components

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LPG Tank

Tasks / Functions

The liquid gas tank is a pressure-resistant steel tank which can absorb 10 to 230 liter liquid gas depending on the size.

The storage pressure is approximately 9 bar. At an excess pressure of approx. 25-30 bar the

safety valve opens and blowes out the gas out-of-doors.

Recess tanks as usual today, which are available in different sizes can be placed directly in the spare-wheele recess of the trunk.

The spare wheel will be replaced by emergency tire inflator.

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LPG Multivalve - Safety valve Tasks / Functions

At an excess pressure of approx. 25-30 bar the safety valve opens and blowes out the gas out-of-doors, so the tank can not explode at a fire of the vehicle!

Also when refueling the savety valve cuts off when the recess tank is (at approx. 80%) full.

At the same unit there is a tank fuel level indicator and a manual shut-off valve in order not to drain the complete tank at the gas system when performing repairs.

The solenoid shut-off valve is only activated after the activation of gas operation.

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LPG Evaporator pressure regulator

Tasks / Functions

The liquid gas arrives from the tank to the evaporator pressure regulator.

Via the cooling circuit the evaporator pressure regulator is heated in order to guarantee a faster vaporisation of the liquid gas.

At the evaporator the pressure is reduced to 2 bar. This pressure is constantly available at the injectors.

1 I-Business Convention 2008 Confidential | AA/MKC | 23-25/04/2008 | © Robert Bosch GmbH 2008. All...

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Transcript of 1 I-Business Convention 2008 Confidential | AA/MKC | 23-25/04/2008 | © Robert Bosch GmbH 2008. All...