IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0236887
(1988-08-26)
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발명자
/ 주소 |
- Hanson Jay L. (Bloomington MN) Howland Leland L. (Belle Plaine MN)
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출원인 / 주소 |
- Thermo King Corporation (Minneapolis MN 02)
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인용정보 |
피인용 횟수 :
19 인용 특허 :
2 |
초록
▼
Electrical control apparatus for automatically starting a Diesel engine. The apparatus includes start, preheat and run relays which respectively control the energization of a starting solenoid, glow plugs, and a fuel solenoid. The energization of the start, preheat and run relays is controlled by a
Electrical control apparatus for automatically starting a Diesel engine. The apparatus includes start, preheat and run relays which respectively control the energization of a starting solenoid, glow plugs, and a fuel solenoid. The energization of the start, preheat and run relays is controlled by a control module which drives the preheat relay as soon as the control module is energized. The glow plug preheat time is measured, and the run and start relays are respectively energized just prior to, and at the termination of the preheat time. Engine cranking time and speed are monitored, dropping the start and preheat relays when the engine starts, and also when the engine speed fails to reach certain thresholds within first and second predetermined periods of time. The run relay continues to energize an electrical circuit which includes an engine reset switch and a low oil pressure switch. The engine reset switch de-energizes the control module, and thus the run relay, in the event the engine fails to start.
대표청구항
▼
Electrical control apparatus for automatically starting a Diesel engine, comprising: a starting solenoid, glow plugs, a fuel solenoid, start, preheat and run relays having switch contacts connected to respectively control the energization of said starting solenoid, glow plugs, and fuel solenoid, a c
Electrical control apparatus for automatically starting a Diesel engine, comprising: a starting solenoid, glow plugs, a fuel solenoid, start, preheat and run relays having switch contacts connected to respectively control the energization of said starting solenoid, glow plugs, and fuel solenoid, a control module for controlling the energization of said start, preheat and run relays following energization of the control module, and means for energizing said control module when the Diesel engine is to be automatically started, said control module including: first logic means for controlling said preheat relay, said first logic means energizing the preheat relay when said control module is energized, to initiate energization of said glow plugs, first timer means for providing a glow plug preheat time related to the temperature of the Diesel engine, said first timer means providing a first signal for energizing the run relay prior to the completion of the preheat time, to energize the fuel solenoid, and a second signal at the completion of the preheat time, second logic means for controlling said start relay, said second logic means being responsive to the second signal of said first timer means, energizing the start relay in response thereto, to energize the starting solenoid, monitor means for monitoring the speed (RPM) of the Diesel engine, comparator means responsive to said monitor means for providing first and second signals at first and second predetermined RPM\s, respectively, second timer means responsive to the second signal of the first timer means and to the first signal of the comparator means for providing a limit signal, said second timer means providing the limit signal after a first predetermined period of time, in the absense of the first signal, of the comparator means, said second timer means providing the limit signal after a second predetermined period of time upon receipt of the first signal prior to the end of said first predetermined period of time, said first and second logic means being responsive to said limit signal and to the second signal of said comparator means, said first and second logic means respectively de-energizing the preheat relay and the start relay in response to the first to occur of said limit and second signals.
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