Intake throttling device for diesel engines
AssigneesNippon Soken, Inc., Toyota Jidosha Kogyo Kabushiki Kaisha
InventorsKiyoshi Kato, Yasuo Kondo, Satosi Kuwakado, Nobuhiko Kakeno
Life of this patent
Estimating the term…
Abstract
An intake throttling device adapted to a Diesel engine includes an intake pipe for connection to an intake manifold of the engine, a throttle valve arranged within the intake pipe, and an actuator operatively connected to the throttle valve and arranged to be deactivated to fully open the throttle valve during normal operation of the engine, to be rendered in its first activated condition to adjust the opening angle of the throttle valve during idling operation of the engine, and to be rendered in its second activated condition to fully close the throttle valve when the engine is arrested or immediately before the engine is arrested.
Claims3
An intake throttling device adapted to a Diesel engine, comprising:
- an intake pipe for connection to an intake manifold of said engine;
- a throttle valve arranged within said intake pipe and fixed to a valve shaft rotatably supported from said intake pipe to rotate in response to the rotational movement of said valve shaft;
- an actuator operatively connected to said valve shaft to fully open said throttle valve in its deactivated condition, to adjust the opening angle of said throttle valve suitable for operation of said engine under a low loaded condition in its first activated condition, and to fully close said throttle valve in its second activated condition;
- and
- control means for maintaining said actuator in its deactivated condition during normal operation of said engine, for rendering said actuator in its first activated condition during operation of said engine under the low loaded condition and for rendering said actuator in its second activated condition when said engine is arrested or immediately before said engine is arrested.
Dependencies are inferred from the claim text.