A U.S. senator said Tuesday he plans to introduce legislation to provide more aid for auto-parts suppliers, after the Obama administration turned down an industry request for more funds.

Sen. Sherrod Brown, D-Ohio, said in a statement that the proposed legislation would "provide a new funding source to help auto suppliers and other manufacturers retool for the clean energy industry." He plans to unveil the proposal Wednesday on Capitol Hill.

The plan, which Brown said has the support of business, environmental and labor leaders, would aim to prevent a wave of bankruptcy filings by parts companies while helping them retool to build more fuel-efficient cars.

Trade groups warned last week that hundreds of suppliers could collapse without further government aid as the bankruptcy filings of General Motors Corp. (GMGMQ) and Chrysler LLC deepen the suppliers' troubles.

Suppliers met with President Barack Obama's auto-industry task force last week to request that the government guarantee $8 billion to $10 billion in loans so banks will lend to the suppliers. A Treasury Department spokeswoman said after the meeting that the administration currently has no plans to provide more funding beyond a $5 billion aid program put in place earlier this year.

"Last week's meeting was just one of the several steps the administration has taken to work with auto-supply companies and monitor supply base going forward," the spokeswoman said. "The Supplier Support program is playing an important role in stabilizing the supply base, protecting good-paying American jobs and giving GM and Chrysler reliable access to the parts they need."

"At this time, no changes have been made to funding," she added, but the Treasury Department "will continue to monitor the situation."

-By Josh Mitchell, Dow Jones Newswires; 202-862-6637; joshua.mitchell@dowjones.com