Patent ES-309866-A1 (ES)
Title: Improvements in and relating to a remote control system for an internal combustion engine, particularly a marine engine
IPC: F01L13/00
Filed: 1965-02-26
Abstract: In a remote control system for an I. C. marine engine a first manoevring member 109 at an engine control station defines a maximum engine speed to which the engine can be adjusted by means of a second manoevring member at a remote control station. An engine driven governor 101 adjusts the position of a fuel-injection regulating shaft 107 through shaft 103, 'triangle bar' system 105 and rod 106. A spring 142 permits emergency movement of shaft 107 independently of the position of shaft 103. Manoevring member 109 is connected through a linkage 112, bell crank 137 and a two-part rod 113 to arm 114 on the governor speed setting shaft 102. A servomotor 110, controlled by the remote manoevring member, is connected through an arm 117 and a twopiece rod 118 with arm 114. Arm 117 is also connected through a two-piece rod 120, having a built-in comparator 121, and arm 119 with the fuel regulating shaft 107. Manoevring member 109 is connected through linkage 112 rods 122, 123 with arm 124 to rod 106. Operation. If the servomotor 110 is controlled from the remote station to'adjust speed-setting shaft 102 and member 109 is rotated anti-clockwise from the position in Fig. 1, rod 113 is moved downwardly causing nut (133), Fig. 2 (not shown) to engage pivot (132) thereby rotating arm 114 and shaft 102 to decrease engine speed. The lower portion 138 of rod 118 remains still whilst the upper portion 140 is raised by arm 114. If member 109 is rotated clockwise from the position shown in Fig. 1 rod 113 moves upwardly but the engagement of the ends of the upper and lower rod parts (138), (140) prevents movement of arm 114 whilst spring 115 is compressed. In response to a further signal from the remote station to increase speed the compression force of spring 115 causes rotation of arm 114 and shaft 102. If the speed signal from the remote station exceeds the speed set by member 109, the upper rod part (140) remains fixed in a position determined by the position of arm 114 whilst the lower rod part 138 continues its downward movement. A reduce-speed signal from the remote station causes the lower rod portion (138) to engage the upper rod portion (140) thereby rotating arm 114 and shaft 102 anti-clockwise. This causes pivot (132), and sleeve (135) to be displaced downwardly to compress spring 115. An indicator e. g. a warning lamp controlled by a limit switch secured to rod parts (138), (140), may be provided at the remote station and at tne engine control station to signal whether the speed set at the remote station exceeds the speed set by manoevring member 109. A similar indicator may be provided between rod 113 and arm 114. Fuel cut-out during engine reversal. A reversing handle 143, which may be operated by a remotely-controlled pneumatic cylinder 145, is connected through linkage 153, 152, to a disc 146. The fuel regulating shaft 107 is connected through linkage 155, 154 to a disc 147. A nut 159 which is displaced during reversing of the engine cam-shaft is connected through linkage 158, 157, with a disc 148. Discs 146, 147, 148 have interlocking projections 161, 162 which ensure that engine reversal can be carried out only when shaft 107 is in the "zero fuel" position and that shaft 107 cannot be turned from this position until member 143 and shaft 160 are in the correct extreme position. The servomotor 110 may be controlled by push buttons from a bridge telegraph and the control circuit may include a timer or temperaturecontrolled device which gives a slow rate of speed increase m the range of 70%-90% of maximum output. The linkage system may include a pneumatic or hydraulic ram.