1.   Engineers are working on developing and refining the car engines.

2.   From dawn in the street, the voices of kids, car engines and cyclo bells still floated up.

3.   He hears a car engine start.

4.   I heard the sound of a car engine in the distance.

5.   It looks like part of a car engine.

6.   Perhaps you tore apart a car engine and reassembled it in moments flat.

7.   The above diagram shows a diesel car engine.

8.   The car engine continued to run despite my having the ignition key in my pocket!