Page 61 - 05. Subyek Teknik Mesin - Automobile Mechanical and Electrical Systems Automotive Technology Vehicle Maintenance and Repair (Vehicle Maintenance Repr Nv2) by Tom Denton

1
46 Automobile mechanical and electrical systems

Centre line

Dimension
lines
Hidden
detail
99

Figure 1.65 A three-dimensional (3D) representation (oblique projection)

Engine
speed

Engine load
(MAP)

Coolant
temperature

Air Fuel
temperature injectors

Fuel rail Idle control
ECU
temperature actuator
Throttle
Diagnostics
position
sensor
EGO

Battery
voltage

Other
system links

Figure 1.66 Block diagram representing a fuel injection system. MAP, manifold absolute
pressure; EGO, exhaust gas oxygen; ECU, electronic control unit

1.4.19 Drawings

Drawings are an ideal way to pass on important information ( Figs 1.65 and 1.66 ).
Many manufacturers provide information in the form of drawings. It is essential
that you can interpret the details you need and are not put off by the amount of
information presented.

To help you do this, some simple standards are used relating to the type of line:
continuous thick line _____________ visible outlines
●
continuous thin line _____________ projection, dimension and hatching lines
●
short thin dashes _ _ _ _ _ _ _ _ _ hidden details
●