Apparatus for controlling an engine in a hydraulically driven vehicle

Patent · Tue Jan 27 00:00:00 EST 1987

OSTI ID:7050455

Kitada, T

An apparatus is described for controlling the internal combustion engine of a hydraulically driven vehicle comprising: a transmission mechanism for transmitting the operation of a fuel control lever to a governor control lever and having a loose spring mechanism with a loose spring therein: a hydraulic decelerator cylinder connected to the transmission mechanism and having a spring and piston therein. The deceleration cylinder spring has a slightly larger spring force than the loose spring in the loose spring mechanism and applies a force absorbing action, in the absence of hydraulic force acting on the piston, to set the governor control lever in its deceleration position when the fuel control lever is moved to its full engine speed position and for moving the governor control lever to its full engine speed position when hydraulic force is applied to the piston; an electromagnetic valve for applying fluid pressure from a control pump driven by the engine to the piston in the decelerator cylinder and releasing the fluid pressure; and an electric circuit including switches operationally associated with levers for operating a hydraulic valve.

• Assignee: Kabushiki Kaisha Komatsu Seisa Kusho, Tokyo
• Patent Number(s): US 4638779
• OSTI ID: 7050455
• Resource Relation: Patent File Date: Filed date 28 Mar 1985
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
CONTROL SYSTEMS
HYDRAULIC CONTROL DEVICES
VEHICLES
CYLINDERS
ELECTROMAGNETIC PUMPS
ELECTRONIC CIRCUITS
MECHANICAL TRANSMISSIONS
PISTONS
PRESSURE CONTROL
SPRINGS
SWITCHES
VALVES
VELOCITY
CONTROL
CONTROL EQUIPMENT
ELECTRICAL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
HEAT ENGINES
MACHINE PARTS
PUMPS
330100* - Internal Combustion Engines