Equus 3040 - OBD2 ScanTool Uživatelský manuál Strana 9
- Strana / 52
- Tabulka s obsahem
- KNIHY
Hodnocené. / 5. Na základě hodnocení zákazníků
Onboard Diagnostics
COMPUTER ENGINE CONTROLS
OBD2 7
COMPUTER ENGINE CONTROLS
The Introduction of Electronic Engine Controls
As a result of increased air pollution (smog) in large cities,
such as Los Angeles, the California Air Resources Board
(CARB) and the Environmental Protection Agency (EPA)
set new regulations and air pollution standards to deal with
the problem. To further complicate matters, the energy crisis of
the early 1970s caused a sharp increase in fuel prices over a
short period. As a result, vehicle manufacturers were not only
required to comply with the new emissions standards, they also
had to make their vehicles more fuel-efficient. Most vehicles
were required to meet a miles-per-gallon (MPG) standard set by the U.S.
Federal Government.
Precise fuel delivery and spark timing are needed to reduce vehicle
emissions. Mechanical engine controls in use at the time (such as
ignition points, mechanical spark advance and the carburetor)
responded too slowly to driving conditions to properly control fuel
delivery and spark timing. This made it difficult for vehicle manufacturers
to meet the new standards.
A new Engine Control System had to be designed and integrated with
the engine controls to meet the stricter standards. The new system had
to:
Respond instantly to supply the proper mixture of air and fuel for any
driving condition (idle, cruising, low-speed driving, high-speed
driving, etc.).
Calculate instantly the best time to “ignite” the air/fuel mixture for
maximum engine efficiency.
Perform both these tasks without affecting vehicle performance or
fuel economy.
Vehicle Computer Control Systems can perform millions of calculations
each second. This makes them an ideal substitute for the slower
mechanical engine controls. By switching from mechanical to electronic
engine controls, vehicle manufacturers are able to control fuel delivery
and spark timing more precisely. Some newer Computer Control
Systems also provide control over other vehicle functions, such as
transmission, brakes, charging, body, and suspension systems.
Electronic Computer Control Systems make it possible
for vehicle manufacturers to comply with the tougher
emissions and fuel efficiency standards mandated by
State and Federal Governments.
- 11231 Young River Ave 1
- Fountain Valley, CA 92708 1
- Printed in China 1
- Table of Contents 2
- You Can Do It! 3
- Safety Precautions 4
- About the Scan Tool 5
- About the Scan Tool 6
- Onboard Diagnostics 10
- Onboard Diagnostics 11
- P 0 2 0 1 15
- Preparation for Testing 26
- Using the Scan Tool 27
- Using the Scan Tool 28
- Live Data Mode 34
- Live Data Mode 35
- Additional Functions 37
- Additional Functions 38
- OBD2 41 43
- 42 OBD2 44
- OBD2 43 45
- 44 OBD2 46
- OBD2 45 47
- Notes 48
- Notes 49
- Warranty and Servicing 51
Související produkty a manuály pro Měřící nástroje Equus 3040 - OBD2 ScanTool
(64 stránky)Bosch Ake 40-19 S Handbücher
Bedienungsanleitungen und Benutzerhandbücher für Elektrowerkzeuge Bosch Ake 40-19 S.
Wir stellen 1 PDF-Handbücher Bosch Ake 40-19 S zum kostenlosen herunterladen nach Dokumenttypen zur Verfügung Betriebsanleitung
Komentáře k této Příručce