Electrical control system for stopping and starting a motor-vehicle engine

In combination with an internal-combustion engine having an electric starting motor, an ignition system, and an electric power source, a control system comprising:

• a main ignition switch connected in series between said power source and said ignition system and closable to energize said ignition system from said power source;
• interrupter circuit means including a stop switch connected in series between said ignition system and said main ignition switch for energization of said ignition system through said main ignition switch when closed and for deenergization of said ignition system when open, whereby operation of said engine is stopped when said stop switch is open;
• a manual start switch connected in series between said main ignition switch and said starting motor and closable when said main ignition switch is closed to energize said motor from said source;
• engine-monitoring means including an automatic restart switch connected in series with said manual start switch and closed only when said engine is operating below a relatively low speed;
• a restart switch operable manually and connectable in series with said automatic restart switch and in parallel across said manual start switch;
• and
• holding circuit means connected to the manual restart switch for maintaning same connected in parallel to said manual start switch until said main ignition switch is opened.

In a motor vehicle having an internal-combustion engine having in turn an electric starting motor, an ignition system, and an electric power source, a control system comprising:

• a main ignition switch connected in series between said power source and said ignition switch and closable to energize said ignition system from said power source;
• interrupter circuit means including a stop switch connected in series between said ignition system and said main ignition switch for energization of said ignition system through said main ignition switch when closed and for deenergization of said ignition system when open;
• a manual start switch connected in series between said main ignition system and said starting motor and closable when said main ignition switch is closed to energize said motor from said source;
• engine-monitoring means including an automatic restart switch connected in series with said manual start switch between said source and said starting motor and closed only when said engine is operating below a relatively low speed;
• restart means including a manual restart switch connectable in series with said automatic restart switch across said manual start switch and closed only when said vehicle is moving at above a predetermined speed for automatically starting said engine;
• and
• holding circuit means connected to said manual restart switch for maintaining same connected in parallel to said manual start switch until said main ignition switch is opened.