WASHINGTON, Aug. 31 (Xinhua) -- U.S. Federal Reserve Chairman Ben Bernanke vowed Friday that the central bank is prepared to take more actions to keep the credit crisis from hurting the economy.

    "The Federal Reserve stands ready to take additional actions as needed to provide liquidity and promote the orderly functioning of markets," Bernanke said at a Fed symposium in Jackson Hole, Wyoming. His speech was posted on the Fed website.

U.S. Federal Reserve Chairman Ben Bernanke speaks at a House of Representatives Financial Services Committee hearing monetary policy and the state of the economy, on Capitol Hill in Washington July 18, 2007.(Xinhua/Reuters Photo) Photo Gallery>>>

    The chairman did not specify what the Fed's next move will be, however.

    "It is not the responsibility of the Federal Reserve -- nor would it be appropriate -- to protect lenders and investors from the consequences of their financial decisions," Bernanke said.

    "But developments in financial markets can have broad economic effects felt by many outside the markets, and the Federal Reserve must take those effects into account when determining policy," he added.

    In light of recent financial developments, "the uncertainty surrounding the outlook will be greater than normal, presenting a challenge to policymakers to manage the risks to their growth and price stability objectives," said Bernanke.

    The Fed "continues to monitor the situation and will act as needed to limit the adverse effects on the broader economy that may arise from the disruptions in financial markets," he said.

    Since Aug. 9, the Fed has injected a total of 147.25 billion U.S. dollars into the financial system to ease tightening credit stemming from the troubles in the high-risk subprime mortgage market, which offers loans to people with lower credit and income.

    On Aug. 17, the Fed approved a half-percentage point cut in its discount rate on loans to banks to promote the restoration of orderly conditions in financial markets.

    The decision means the discount rate, the interest rate that the Fed charges to make direct loans to banks, has been lowered to5.75 percent from 6.25 percent.

    But the Fed did not change its target for the more important federal funds rate, the interest commercial banks charge each other on overnight loans. The benchmark interest rate has remained at 5.25 percent for more than a year.

    Many expect the Fed to cut its target rate by at least one-quarter percentage point on or before Sept. 18, its next regularly scheduled meeting. If so, that would be the Fed's first rate cut in over four years.