A short study of camless engine.

1. camless
engines
presented by
Aaditya Dhiman

2. Basic concept on camless
 it is an electro magnetic concept
electro magnetic field should operate inlet and
outlet port
Examble: school bell

3. CAMLESS ENGINES
 Eliminated mechanical linkages
 Could provide infinite variation of valve parameters
 It can make engines clean, efficient & responsive

4. Conventional Engine Valves

5. Camless engines overview
 Main sensors -
Engine load sensor Exhaust gas sensor
Valve position sensor Engine speed sensor
ELECTRONIC
CONTROL UNIT
SENSORS ACTUATORS

6.  Sensors sense parameters & send signals to ECU
 ECU contains microprocessors with associated software
 This ECU controls the actuators to work according to requirements

7. Operations of engine valves

9.  Lift, timing & duration of valve opening is varied by controlling solenoid valves
 This is done by ECU when signals are sent from the sensors

10. Resultant Advantages
 Better fuel economy- 7 to 10 % increase
 Higher torque & power- 10 to 15 % increase
 Lower exhaust emissions- EGR system is eliminated since EGR
effect occurs on its own & thus reduces NOx emissions
 Reduction in size & weight

11. Disadvantages
 High Cost
 Increased power consumption
 Air gap between the solenoids may demand a higher magnitude of
current during certain periods
 The control strategy for valve seating velocity needs to be modified

12. Conclusion
Even though some disadvantages are present, we can expect
electrohydraulic & electromechanical valves to replace the
conventional camshaft technology.

13. Thanking you