Starting circuit for engine utilizing fuel injection pump

Claim 2

In combination with an engine, a starting device that automatically accomplishes a starting cycle for said engine and utilizes a battery driven electric starter, and a fuel injection pump for supplying metered quantities of fuel to the injectors associated with the cylinders of the engine, said device comprising an electric switch mounted in Operative relation with said injection pump, said injection pump having a control rod, said electric switch being moved to a circuit-closing position upon said control rod being moved to a position corresponding to an engine-starting position, and being opened by said control rod being automatically caused to move away from the latter position, and electrical circuit means interconnecting said electric switch with the battery and starter of the engine, whereby upon said electric switch being closed, the cranking of the engine by the starter is caused to commence, and upon the engine reaching a certain speed, said electric switch is caused by the inherent operating characteristics of the injection pump to be opened and thus cause an immediate cessation of the engine cranking effort.

Claim 3

The starting device as defined in claim 1 in which glow plugs are utilized in the cylinders of the engine for assisting in the starting of the engine, said starting device additionally including a heat actuated switch for controlling the heating of the glow plugs, latter switch containing heating means arranged to heat with the heating of the glow plugs, as well as having heat-sensitive circuit-closing means adjacent said heating means and disposed in said circuit interconnecting the battery and the starter, said circuit between battery and starter being closed by said circuit-closing means to bring about engine cranking effort at such time as the glow plugs and heating means have reached preestablished conditions of heating.

Claim 4

The starting device of claim 2 in which a control panel containing a preheat relay is utilized, said preheat relay, when in the electrically closed position, completing the circuit to said heat-actuated switch, said preheated relay being closed by the closing of said electric switch, and thereafter being opened upon the engine attaining speed, to deprive to heat-actuated switch of current, thus to cause a cessation of cranking effort.

Claim 5

The starting device as defined in claim 1, that is utilized in conjunction with a refrigeration unit, a temperature-sensitive electrical device disposed to bring about operation of said starting device in the presence of a requirement for heating or cooling, said fuel injection pump having solenoid means that must be energized in order for the engine to run, said temperature-sensitive electrical device being arranged to cause said solenoid means to be energized at such time as a temperature requirement is to be met.

Claim 6

An autocmatic starting device for automatically accomplishing a starting cycle for an engine that utilizes a fuel pump for supplying metered quantities of fuel and which pump has a control rod that is in an extended position when the engine is not operating, and in a retracted position when the engine is operating at a selected speed, said engine also having a battery, an electric starter, and electrically heated glow plugs for preheating the engine prior to energizing the starter, said starting device comprising: a. normally open starter switch means, said switch means in operative electrical connection with the starter and the battery; b. electrical heating means disposed closely adjacent said starter switch means, said starter switch means being actuated to a closed position by the heat generated by said electric heating means at a predetermined temperature thereof, said electric heating means being connected in series with the glow plugs and arranged to reach such predetermined temperature coincident in time with such glow plugs achieving a selected engine preheat temperature; c. starting cycle switch means, said starting cycle switch means being connected functionally in series with said electric heating means, and arranged to be in a closed position when the pump control rod is in an extended position, and to be in an open position when the control rod is in a retracted position; and d. temperature-responsive switch means, said temperatureresponsive switch means being connected in series wiTh said starting cycle switch means and electrically connected to the battery.

Claim 7

An autocmatic starting device for automatically accomplishing a starting cycle for an engine that utilizes a fuel pump for supplying metered quantities of fuel and which pump has a control rod that is in an extended position when the engine is not operating, and in a retracted position when the engine is operating at a selected speed, said engine also having a battery, an electric starter, and electrically heated glow plugs for preheating the engine prior to energizing the starter, said starting device comprising: a. normally open starter switch means, said switch means in operative electrical connection with the starter and the battery; b. electrical heating means disposed closely adjacent said starter switch means, said starter switch means being actuated to a closed position by the heat generated by said electric heating means at a predetermined temperature thereof, said electric heating means being connected in series with the glow plugs and arranged to reach such predetermined temperature coincident in time with such glow plugs achieving a selected engine preheat temperature; c. starting cycle switch means, said starting cycle switch means being connected functionally in series with said electric heating means, and arranged to be in a closed position when the pump control rod is in an extended position, and to be in an open position when the control rod is in a retracted position; and d. temperature-responsive switch means, said temperatureresponsive switch means being connected in series wiTh said starting cycle switch means and electrically connected to the battery.

Claim 8

An automatic starting device for automatically accomplishing a starting cycle for a Diesel engine at a selected temperature, the engine having a battery, an electric starter, a fuel injection pump, the pump having a control rod that is in an extended position when the engine is non-operating and in a retracted position when the engine is operating at a selected speed, and electrically heated glow plugs for preheating the engine prior to energizing the starting motor, said starting device comprising: a. starter switch means, said starter switch means, when in a closed condition, being arranged to connect the starter to the battery; b. electric heat means, said electric heat means connected cooperatively to the glow plugs and arranged to close said starter switch means at the time such glow plugs achieve a predetermined engine preheat temperature; c. starting cycle switch means, said starting cycle switch means in operative electrical connection with said electric heat means and controlled by the control rod; and d. temperature-responsive switch means in operative electrical connection with said starting cycle switch means and the battery.

Claim 9

An automatic starting device for automatically accomplishing a starting cycle for a Diesel engine at a selected temperature, the engine having a battery, an electric starter, a fuel injection pump, the pump having a control rod that is in an extended position when the engine is non-operating and in a retracted position when the engine is operating at a selected speed, and electrically heated glow plugs for preheating the engine prior to energizing the starting motor, said starting device comprising: a. starter switch means, said starter switch means, when in a closed condition, being arranged to connect the starter to the battery; b. electric heat means, said electric heat means connected cooperatively to the glow plugs and arranged to close said starter switch means at the time such glow plugs achieve a predetermined engine preheat temperature; c. starting cycle switch means, said starting cycle switch means in operative electrical connection with said electric heat means and controlled by the control rod; and d. temperature-responsive switch means in operative electrical connection with said starting cycle switch means and the battery.

Claim 10

A starting device for an engine that utilizes an electric starter, electrically heated glow plugs for preheating the engine prior to energizing the starter, and a fuel injection pump for supplying metered quantities of fuel, which pump has a control rod that is in an extended position when the engine is not operating, and in a retracted position when the engine is operating at a selected speed, said starting device comprising: an electric switch mounted in operative relation with the control rod of the injection pump, said electric switch being moved to a circuit-closing position when the control rod is in the extended position, and being opened when the control rod is in the retracted position, a preheat relay electrically connected with said electric switch, said preheat relay being energized to move to a circuit closing position by the closing of said electric switch and to a circuit opening position by the opening of said switch, a heat actuated switch connected in the circuit closed by said preheat relay, said heat actuated switch containing heating means arranged to heat and reach an elevated temperature essentially coincidentally with the heating of the glow plugs and also having heat-sensitive circuit closing means adjacent latter means, latter circuit closing means being disposed in the circuit interconnecting the starter with its power source, latter circuit being closed by said heat sensitive circuit-closing means to cause cranking efforts by the starter at such time as the glow plugs and heat sensitive means have reached a pre-established condition of heating, said preheat relay being caused to open and thus bring about the cessation of such cranking efforts by the starter as a result of the subsequent opening of said electric switch.

Claim 11

A starting device for an engine that utilizes an electric starter, electrically heated glow plugs for preheating the engine prior to energizing the starter, and a fuel injection pump for supplying metered quantities of fuel, which pump has a control rod that is in an extended position when the engine is not operating, and in a retracted position when the engine is operating at a selected speed, said starting device comprising: an electric switch mounted in operative relation with the control rod of the injection pump, said electric switch being moved to a circuit-closing position when the control rod is in the extended position, and being opened when the control rod is in the retracted position, a preheat relay electrically connected with said electric switch, said preheat relay being energized to move to a circuit closing position by the closing of said electric switch and to a circuit opening position by the opening of said switch, a heat actuated switch connected in the circuit closed by said preheat relay, said heat actuated switch containing heating means arranged to heat and reach an elevated temperature essentially coincidentally with the heating of the glow plugs and also having heat-sensitive circuit closing means adjacent latter means, latter circuit closing means being disposed in the circuit interconnecting the starter with its power source, latter circuit being closed by said heat sensitive circuit-closing means to cause cranking efforts by the starter at such time as the glow plugs and heat sensitive means have reached a pre-established condition of heating, said preheat relay being caused to open and thus bring about the cessation of such cranking efforts by the starter as a result of the subsequent opening of said electric switch.

Claim 12

The starting device as defined in claim 7 in which a temperature-sensitive electrical device is utilized for bringing about the operation of said starting device in the presence of a requirement for heating or cooling, said fuel injection pump having solenoid means whose energization is responsible for placing said control rod in the position corresponding to an engine-starting position, said temperature-sensitive electrical device being arranged to cause said solenoid means to be energized at such time as a temperature requirement is to be met, and correspondingly causing the de-energization of said solenoid means at such time as the temperature requirement has been met, thus causing the engine to be shut down until such time as another temperature requirement has become mainfest.