| 
 | (11) | EP 2 037 118 A3 | 
| (12) | EUROPEAN PATENT APPLICATION | 
| 
 
 
 
 | 
 | 
| 
 
 
 | 
 
 | |||||||||||||||||||||||
| (54) | Start control device for internal combustion engine | 
| (57) A target rotation angle of a crank angle between a crank angle stored upon stoppage
                     of a crankshaft (8) and a reference position (45b) is computed. Then, the presence
                     of a failure in the starting means (20) is determined based on whether a missing tooth
                     part (45b) is detected when the crankshaft (8) rotates by the target rotation angle
                     from the rotation stop position of the crankshaft (8) after an engine (1) is started
                     by a starting means (20). If the missing tooth part (45b) is not detected when the
                     crankshaft (8) rotates by the target rotation angle from the rotation stop position
                     of the crankshaft (8), it is determined that the starting means (20) has a failure
                     because there is a high possibility of a reverse rotation of the crankshaft (8) due
                     to a failure in the starting means (20). |