Also

* Hanover Compressor Co., a pipeline-equipment maker faced with a federal accounting probe and a plunging stock price, ousted Chief Executive Michael J. McGhan and Chief Operating Officer Charles D. Erwin. Chairman Victor E. Grijalva was appointed interim chief executive and pledged to make the company a “model of corporate governance.” The shares fell $1.21, or 14%, to $7.30 on the NYSE.

* Fiat agreed to sell its aluminum engine parts business to a J.P. Morgan Chase & Co. acquisition firm and a U.S. buyout group for about $454 million as part of its effort to reduce debt. JPMorgan Partners, Questor Partners, closely held Private Equity Partners and a unit of American International Group Inc. will buy Fiat’s Teksid Aluminum unit.

* General Electric Co. agreed to buy TRW Inc.’s NovaSensor unit to increase sales of sensors for the manufacturing, medical and automotive industries. Terms weren’t disclosed. Fremont, Calif.-based NovaSensor will become part of General Electric’s measurement and sensing business within the GE Industrial Systems unit.