Abstract: A device for the control of the traveling speed of a motor vehicle with a regulating unit actuateable by the vehicle driver, particularly a gas pedal, and means for transmission of the movement of the same to an element, particularly the throttle valve, which influences the fuel-air mixture. An electrical controller is provided, the desired value input of which is applied with the output signal of a first electrical position indicator, the latter being coupled with the regulating unit and the actual value input of which is applied with the output signal of a second electrical position indicator, the latter being coupled with the setting member or positioning actuator of an electrical setting or adjusting device, the actuator standing in connection with the element which influences the air-fuel mixture. Upon actuation of the brake or clutch, a coupling device, between a servomotor of the electrical controller and the actuator, is disconnected for a short time.

Abstract: A device for the control of the traveling speed of a motor vehicle with a regulating unit actuatable by the vehicle driver, particularly a gas pedal, and means for transmission of the movement of the same to an element, particularly the throttle valve, which influences the fuel-air mixture. An electrical controller is provided, the desired value input of which is applied with the output signal of a first electrical position indicator, the latter being coupled with the regulating unit and the actual value input of which is applied with the output signal of a second electrical position indicator, the latter being coupled with the setting member or positioning actuator of an electrical setting or adjusting device, the actuator standing in connection with the element which influences the air-fuel mixture. Measures are provided which compensate for abnormal speed conditions of the device.

Abstract: An emergency shutdown device for an internal combustion engine, especially a fuel-injected diesel engine. In addition to shutting off the flow of fuel to the engine, the device "suspends" fuel within the engine fuel supply system to prevent it from passing into the engine combustion chambers. The device provides a controllable vacuum means which, by preventing fuel passage into the fuel injector pumps, quickly "starves" the engine of its fuel supply.

Abstract: A safety interlock for a vehicle driven through a transmission by an internal combustion engine that has a magneto ignition system and a seat occupied by a driver. The interlock is electrically connected to the ignition and to safety switches, one that is opened when the transmission to a traction drive is engaged and another that is closed when the seat is occupied. The interlock circuit disables the ignition if the engine is not running and the transmission is engaged so the engine cannot be started under unsafe conditions. The engine is also disabled if, after it is running, the seat becomes unoccupied while the transmission is engaged. However, the interlock allows the engine to be started with the seat occupied or not, as long as the transmission is disengaged. One or more safety switches associated with mechanisms driven by the engine can be connected in series with the transmission-operated safety switch to control operation in the same manner.

Abstract: An internal combustion engine includes an intake system and an exhaaust system, and an exhaust gas recirculation conduit leads from the exhaust system to the intake system for recirculating exhaust gas. An exhaust gas recirculation control valve at an intermediate part of the exhaust gas recirculation passage controls the flow of exhaust gases therein, and is operated by supply of actuating vacuum. The supply of actuating vacuum to the exhaust gas recirculation control valve is furnished according to engine operational conditions. A vacuum tank accumulates vacuum while the engine is running. A vacuum conduit joins the vacuum tank to the exhaust gas recirculation control valve, and is controlled by a vacuum valve which is closed when the ignition system of the engine is being supplied with electrical power, and is open when the ignition system is not being supplied with electrical power.

Abstract: Apparatus (10) for stopping an engine from a remote location relative to an operator's work station. An engagement apparatus (20) which is displaceable between first and second positions is engaged with an engine stoppage member (19) which, when rotatably displaced by the engagement apparatus (20) between two positions corresponding to the first and second positions of the engagement apparatus (20), can permit engine operation or induce engine shutdown. An actuating link (24) interconnected with engagement apparatus (20) is displaceable, when subjected to a momentarily applied external force, between engine operating and engine shutdown positions. A spring (30) biases engagement apparatus (20) towards the first and second positions when the actuating link (24) occupies the engine operation and shutdown positions, respectively.

Abstract: A very heavy vehicle may tend to run away on a steep gradient and as a result the engine is liable to be overspeeded with consequential risk of damage especially to its valve mechanism. The invention aims to prevent overspeeding by providing a servo mechanism operable automatically above a predetermined engine speed to apply an exhaust brake. The servo mechanism preferably comprises a centrifugal clutch normally held disengaged by springs and disposed on a shaft driven by the engine. Angular movement of the driven member of the clutch due to its engagement by engine speed in excess of the predetermined value is limited to, say, 60.degree. by a stop, and said member is mechanically linked to the operating means of the exhaust brake.