Partial throttle jerk in the gasoline engine
Under partial load bucking refers to the non-uniform power output of the engine in part-load operation . In partial load operation, not all of the available engine power for which the engine is designed is called up. The "jerking" is a result of the motor torque increasing and decreasing.
Constant travel jerking means jerking at a constant speed. The jerking can also occur with load changes.
The jerking can also be related to the temperature of the engine (gasoline engines used to have a cold run controller , even earlier a manual choke ).
The jolting of motorcycles is more unpleasant than that of cars for several reasons: The mass-related power (W / kg) is significantly higher; the driver has more direct contact with the machine and sits closer to the engine.
Possible reasons
- For example, if the flow velocities in the intake tract are too low, the mixture can separate (droplet formation), which can result in different combustion processes from work cycle to work cycle
- Fluctuating residual gas content in the combustion chamber due to unfavorable pressure conditions during the valve overlap . As a result, the ignitability of the mixture in the combustion chamber can vary greatly, or
- Inadequate application work of the intake manifold injection
See also
literature
- Peter Gerigk, Detlev Bruhn, Dietmar Danner: Automotive engineering. 3. Edition. Westermann Schulbuchverlag, Braunschweig 2000, ISBN 3-14-221500-X .
- Max Bohner, Richard Fischer, Rolf Gscheidle: Expertise in automotive technology. 27th edition. Europa-Lehrmittel, Haan-Gruiten 2001, ISBN 3-8085-2067-1 .