An engine fuel flow shut-off system particularly adapted for off-highway dumper trucks includes a shutoff valve interposed in the fuel supply conduit to the truck propulsion engine and which is responsive to a pressure fluid control circuit to close. Compressed gas charge bottles operable from the operator's cab and from a ground position in proximity to the vehicle boarding ladder supply pressure fluid to the valve actuator to provide closure of the valve and closure of a second valve to interrupt engine lube oil pressure to an engine injector system governor. The vehicle on-board fire extinguishing system is also operably connected to the shutoff valve actuator by way of separate pressure fluid sources to effect closure of the fuel shutoff valve upon actuation of the fire extinguishing system from either the operator's cab or the ground position.
CROSS REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of application Ser. No. 07/403,633, filed Sept. 6, 1989, now U.S. Pat. No. 4,926,815.
A device presenting a high-pressure pump, and a low-pressure pump connected pstream from the first. To prevent damage in the event of a fault on the device, the connection between the low- and high-pressure pumps is provided with a cutoff valve which is closed in the event of a fault on the low-pressure pump to prevent the intake of solid particles by the high-pressure pump. Also, in the event of a fault on one of the injectors, detected on the basis of the operating conditions of the engine, the low-pressure pump is disconnected to prevent seriously damaging the engine.
An engine has a carburetor that includes a bowl for fuel, a venturi in which the fuel is mixed with air, and a tube for carrying fuel from the bowl to the venturi. A solenoid valve is connected to the tube to control the flow of fuel to the venturi. An engine ignition system includes a coil assembly in which electricity is generated by a permanent magnet driven by the engine passing hear the coil assembly. A transformer includes a primary winding connected to the coil assembly, and a secondary winding. A storage capacitor and a diode are coupled in series across the secondary winding and a switch couples the solenoid valve to said storage capacitor. When an operator desires to stop the engine, the switch is closed which applies electricity from the capacitor to the solenoid valve to reduce an amount of fuel flowing through the tube.
A vehicular and marine fire suppression system for detecting and suppressing and quenching fires. The vehicular and marine fire suppression system including a first canister, a second canister and an actuation mechanism. The first canister houses a fire suppressing agent and is in fluid communication with a manifold assembly for providing delivery of the fire suppression agent from the first canister to the area to be protected by the fire suppression system. The second canister contains a pressurizing/agitation agent and is in fluid communication with the first canister via a valved actuator assembly. The second canister includes a threaded neck defining an outlet and a pierceable seal disposed about the outlet. The actuator assembly includes a piercing member for rupturing the pierceable seal of the second canister. The piercing member is in active engagement with a piston carried by a squib. Ignition of an explosive agent within the squib is used to drive the piston to an extended position thus causing the piercing member to rupture the pierceable seal of the first canister. State-of-the-art heat/smoke detection circuitry and a programmable logic circuit are provided for detecting a fire and delivering an electrical signal to the squib. A handle member and a linkage in operative engagement with the piercing member is provided for manual actuation of the fire suppression system. Alternatively, an electrically actuated solenoid could be used to actuate the piercing member.
